Problem 629: Triangle, Perpendicular to Sides, Intersecting Lines, Altitude

Geometry Problem
Level: Mathematics Education, High School, Honors Geometry, College.

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Problem 558: Quadrilateral, Trisection, Sides, Wittenbauer Parallelogram, Area

Geometry Problem
Click the figure below to see the complete problem 558.


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Level: High School, SAT Prep, College geometry

Geometry Problems 481 - 490

Ten Geometry Problems
Click the figure below to see problems 481-490 about: Square, Circle, Triangle, Altitude, Cevian, Perpendicular, Angle, Circumcircle, Incenter, Excenter, Midpoint, Cyclic, 90 Degrees, Proportion, Measurement, Side.

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Level: High School, College geometry

Geometry Problems 471 - 480

Ten Geometry Problems
Click the figure below to see problems 471-480 about: Triangle, Parallel, Side, Concurrency, Area, Similarity, Parallelogram, Diagonal, Circle, Vertex, Tangent, Secant, circumcenter, quadrilateral, Proportion.

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Level: High School, College geometry

Geometry Problems 301 - 310

Ten Geometry Problems
Click the figure below to see problems 301-310 about Circle, Tangent, Secant, Square, Triangle, Angle Bisector, 45, 60, 90, 120 Degrees, Side, Nonagon, Midpoint, Arc, Diagonal, Semicircle.

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Level: High School, SAT Prep, College geometry

Geometry Problems 251 - 260

Ten Geometry Problems
Click the figure below to see problems 251-260 about Parallelogram, Rectangle, Triangle, Square, Circle, Area, Side, Equilateral, Isosceles, Centroid, Distance, Vertex, Circumcircle, Incircle, Tangent, Diagonal.

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Level: High School, SAT Prep, College geometry

Problem 524: Circle, Equilateral Triangles, Midpoint, Side, Measurement

Geometry Problem
Level: High School, SAT Prep, College geometry.
Click the figure below to see the complete problem 524 about Circle, Equilateral Triangles, Midpoint, Side, Measurement.

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Problem 492: Cyclic Quadrilateral, Circle, Perpendicular, Parallel

Geometry Problem
Click the figure below to see the complete problem 492 Cyclic Quadrilateral, Circle, Perpendicular, Side, Diagonal, Parallel.


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Complete Problem 492

Level: High School, SAT Prep, College geometry

Problem 485: Square, Side, Circles, Tangent, Radius, Measurement

Geometry Problem
Click the figure below to see the complete problem 485 about Square, Side, Circles, Tangent, Radius, Measurement.


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Complete Problem 485

Level: High School, SAT Prep, College geometry

Problem 478: Triangle, Sides, Circumradius, Circumcenter, Circumcircle

Geometry Problem
Click the figure below to see the complete problem 478 about Triangle, Sides, Circumradius, Circumcenter, Circumcircle.


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Complete Problem 478

Level: High School, SAT Prep, College geometry

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Problem 473: Triangle, Parallel, Side, Parallelogram, Area, Similarity

Geometry Problem
Click the figure below to see the complete problem 473 about Triangle, Parallel, Side, Parallelogram, Area, Similarity.


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Complete Problem 473

Level: High School, SAT Prep, College geometry

Problem 472: Triangle, Parallel, Side, Parallelogram, Area, Similarity

Geometry Problem
Click the figure below to see the complete problem 472 about Triangle, Parallel, Side, Parallelogram, Area, Similarity.


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Complete Problem 472

Level: High School, SAT Prep, College geometry

Problem 471: Triangle, Parallel, Side, Concurrency, Area, Similarity

Geometry Problem
Click the figure below to see the complete problem 471 about Triangle, Parallel, Side, Concurrency, Area, Similarity.


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Complete Problem 471

Level: High School, SAT Prep, College geometry

Problem 447: Complete Quadrilateral, Inradii, Exradii, Sides.

Geometry Problem
Click the figure below to see the complete problem 447 about Complete Quadrilateral, Inradii, Exradii, Sides.


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Complete Problem 447
Level: High School, SAT Prep, College geometry

Marion Walter's Theorem Index

Marion Walter's Theorem, Triangle, Trisection of Sides, Hexagon, Areas, and Related Topics

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Marion Walter's Theorem Index

Distance between the Incenter and the Centroid of a Triangle

Proposed Problem
Prove that the distance between the incenter I and the centroid G of a triangle ABC is:
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Distance between the Incenter and the Centroid
Level: High School, SAT Prep, College geometry

Problem 427: Triangle, Two Altitudes, Square of a Side

Proposed Problem
Click the figure below to see the complete problem 427 about Triangle, Two Altitudes, Square of a Side.


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Complete Problem 427

Level: High School, SAT Prep, College geometry

Euclid's Elements Book I, Proposition 6

If in a triangle two angles be equal to one another, the sides which subtend the equal angles will also be equal to one another.
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Euclid's Elements Book I, Proposition 6

Problem 420. Triangle, Angles, Altitude, Sides, Measurement

Proposed Problem
Click the figure below to see the complete problem 420 about Triangle, Angles, Altitude, Sides, Measurement.


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Complete Problem 420
Level: High School, SAT Prep, College geometry

Problem 335. Cyclic Quadrilateral, Perpendicular to sides, Concyclic points

Proposed Problem
Click the figure below to see the complete problem 335 about Cyclic Quadrilateral, Perpendicular to sides, Concyclic points.


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Complete Problem 335
Level: High School, SAT Prep, College geometry