## Friday, May 30, 2008

### Elearn Geometry Problem 112

See also:Complete Problem 112, Collection of Geometry Problems

Area of Square and Triangle. Level: High School, SAT Prep, College geometry

Post your solutions or ideas in the comments.

## Wednesday, May 28, 2008

### Geometry Problem 111

See complete Problem 111

Orthogonal Circles. Level: High School, SAT Prep, College geometry

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## Tuesday, May 27, 2008

### Geometry Problem 110

See complete Problem 110

Contact Triangle, Area, Incircle. Level: High School, SAT Prep, College geometry

Post your solutions or ideas in the comments.

## Monday, May 26, 2008

### Geometry Problem 109

See complete Problem 109

Triangle, Angles, Midpoint, Congruence. Level: High School, SAT Prep, College geometry

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## Monday, May 19, 2008

### Geometry Problem 108

See complete Problem 108

Triangle, Angles, Median, Congruence, Cyclic Quadrilateral. Level: High School, SAT Prep, College geometry

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### Geometry Problem 107

See complete Problem 107

Triangle, Angles. Level: High School, SAT Prep, College geometry

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### Geometry Problem 106

See complete Problem 106

Triangle, Angles, Midpoint, Congruence. Level: High School, SAT Prep, College geometry

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### Geometry Problem 105

See complete Problem 105

Triangle, Angles, Midpoint, Congruence. Level: High School, SAT Prep, College geometry

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### Geometry Problem 104

See complete Problem 104

Triangle, Angles, Midpoint, Congruence. Level: High School, SAT Prep, College geometry

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### Geometry Problem 103

See complete Problem 103

Triangle, Angles, Midpoint, Congruence. Level: High School, SAT Prep, College geometry

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### Geometry Problem 102

Try to use elementary geometry (Euclid's Elements).

See complete Problem 102

Triangle, Angles, Midpoint, Congruence. Level: High School, SAT Prep, College geometry

Post your solutions or ideas in the comments.

See complete Problem 102

Triangle, Angles, Midpoint, Congruence. Level: High School, SAT Prep, College geometry

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### Geometry Problem 101

See complete Problem 101

Triangle, Angles, Midpoint, Congruence. Level: High School, SAT Prep, College geometry

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### Geometry Problem 100

See complete Problem 100

Triangle, Angles, Midpoint, Congruence. Level: High School, SAT Prep, College geometry, Tutoring

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### Geometry Problem 99

See complete Problem 99

Circle Area, General Extension to Pythagoras' Theorem. Level: High School, SAT Prep, College geometry

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### Geometry Problem 98

See complete Problem 98

Quadrilateral Areas, Centroids, Similarity. Level: High School, SAT Prep, College geometry

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### Geometry Problem 97

See complete Problem 97

Similar Triangles, Areas. Level: High School, SAT Prep, College geometry

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### Geometry Problem 96

See complete Problem 96

Similar Triangles, Incenters, Parallelogram. Level: High School, SAT Prep, College geometry

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### Geometry Problem 95

See complete Problem 95

Similar Triangles, Inradii, Parallel. Level: High School, SAT Prep, College geometry

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### Geometry Problem 94

See complete Problem 94

Similar Triangles, Circumradii, Parallel. Level: High School, SAT Prep, College geometry

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### Geometry Problem 93

See complete Problem 93

Similar Triangles, Circumcircles, Parallelogram. Level: High School, SAT Prep, College geometry

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### Geometry Problem 92

See complete Problem 92

Similar Triangles, Circumcircles, Circumradii, Parallel. Level: High School, SAT Prep, College geometry

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### Geometry Problem 91

See complete Problem 91

Similar Triangles, Altitude, Parallel. Level: High School, SAT Prep, College geometry

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### Geometry Problem 90

See complete Problem 90

Quadrilateral and Triangle areas, Midpoints. Level: High School, SAT Prep, College geometry

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### Geometry Problem 89

See complete Problem 89

Triangle area, Midpoints. Level: High School, SAT Prep, College geometry

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### Geometry Problem 88

See complete Problem 88

Triangle and Quadrilateral Areas, Midpoints. Level: High School, SAT Prep, College geometry

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### Geometry Problem 87

See complete Problem 87

Area of Quadrilateral and Midpoints of Diagonals. Level: High School, SAT Prep, College geometry

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### Geometry Problem 86

See complete Problem 86

Intouch and Extouch Triangles, Area. Level: High School, SAT Prep, College geometry

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### Geometry Problem 85

See complete Problem 85

Contact Triangles Areas, Incircle, Excircle. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 84

See complete Problem 84

Contact Triangles Areas, Incircle, Excircle. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 83

See complete Problem 83

Area of a Excircle Contact Triangle, Exradius, Circumradius. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 82

See complete Problem 82

Area of the Contact Triangle, Inradius, Circumradius. Level: High School, SAT Prep, College geometry

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Labels:
area,
circumcircle,
circumradius,
contact,
incircle,
inradius,
triangle

### Elearn Geometry Problem 81

See complete Problem 81

Triangle Area, Side, Inradius, Circumradius. Level: High School, SAT Prep, College geometry

Post your solutions or ideas in the comments.

Labels:
area,
circumcircle,
circumradius,
incircle,
inradius,
side,
triangle

### Elearn Geometry Problem 80

Try to use elementary geometry (Euclid's Elements).

See complete Problem 80

Triangle Area, Incircle, Inradius, Sides. Level: High School, SAT Prep, College geometry

Post your solutions or ideas in the comments.

See complete Problem 80

Triangle Area, Incircle, Inradius, Sides. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 79

See complete Problem 79

Triangle Similarity, Altitudes, Orthocenter, Incircles, Inradii. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 78

Click the figure below to see the problem statement.

Zoom complete Problem 78

Angles in a circle, Perpendicular lines, Congruence, Midpoint, Perpendicular bisector. Level: High School, SAT Prep, College geometry

Zoom complete Problem 78

Angles in a circle, Perpendicular lines, Congruence, Midpoint, Perpendicular bisector. Level: High School, SAT Prep, College geometry

### Elearn Geometry Problem 77

See complete Problem 77

Angles in a circle, Cyclic Quadrilateral, Parallel lines. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 76

See complete Problem 76

Area of a Circle, Square, Circular Sector, Lune. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 75

See complete Problem 75

Three Intersecting Circles, Cyclic Quadrilateral, Angles. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 74

See complete Problem 74

Three Intersecting Circles, Cyclic Quadrilateral, Angles. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 73

See complete Problem 73

Three Intersecting Circles, Cyclic Quadrilateral, Angles. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 72

See complete Problem 72

Intersecting Circles, Cyclic Quadrilateral, Angles, Parallel. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 71

See complete Problem 71

Cyclic Quadrilateral, Angles. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 70

See complete Problem 70

Squares Inscribed in a Triangle. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 69

See complete Problem 69

Square Inscribed in a Triangle. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 68

See complete Problem 68

Triangle, Incircle, Inradius, Tangent. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 67

See complete Problem 67

Triangle, Circumcircle, Angles, Concyclic. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 66

See complete Problem 66

Triangle, Excircle, Tangents, Geometric Mean. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 65

See complete Problem 65

Right Triangle, Midpoints. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 64

See complete Problem 64

Triangle, Incircle, Transversal. Level: High School, SAT Prep, College geometry

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### Elearn Geometry Problem 63

See complete Problem 63

Regular Heptagon, side and diagonals. Level: High School, SAT Prep, College geometry

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