Geometry Problems 271-280: Circle, Quadrilateral, Square, Tangent, Cube, Triangle, Isosceles, Area, 90-80-80-20 Degrees, Circumcircle, Sagitta, Inradi

Ten Geometry Problems
Click the figure below to see problems 271-280 about Circles, Tangent, Cube, Triangle, Isosceles, Area, 80-80-20 Degrees, Circumcircle, Sagitta, Inradius, Square, 90, Chord, Quadrilateral, Perpendicular.

Read more

Level: High School, SAT Prep, College geometry

Montessori Method, Geometric solid bases, Rectangle, Square, Circle for Children - Video and News

Using the bases of geometric solids will improve your child's visual skills.

Click the figure below to see the video and news.

Zoom

Diamond Mining in Action - Index

A diamond is a transparent crystal of tetrahedrally bonded carbon atoms that crystallizes into the diamond lattice which is a variation of the face centered cubic structure.

Click the figure below to view the index.


See more:
Diamond Mining in Action - Index

Da Vinci Cube and Jenn 3D tool for visualizing Coxeter polytopes

Leonardo da Vinci (1452-1519) was a great lover of geometry. His most outstanding polyhedral accomplishment is the illustrations for Luca Pacioli's 1509 book The Divine Proportion.

Jenn 3D is a free software license program for visualizing regular polytopes in stereographic projection.

Click the figure below to see the illustration.


See more:
Da Vinci cube and Jenn 3D tool

Beijing Water Cube: First Visitor

Proposed Problem
Click the figure below to see Eight Year Old Boy First Visitor Of Olympic Water Cube.


See also:
Eight Year Old Boy First Visitor Of Beijing Water Cube.
Collection of Geometry Problems

Pablo Picasso Index

Golden Rectangles and Video
Pablo Picasso (1881 - 1973) was a Spanish painter, draughtsman, and sculptor. As one of the most recognized figures in 20th-century art, he is best known for co-founding the Cubist movement and for the wide variety of styles embodied in his work.

Click the figure below to see Pablo Picasso Index.



See also:
Pablo Picasso: 'The Mystery of Picasso'
Pablo Picasso Index

Problem 272. Tangent Circles, the Cube of the Common external tangent

Proposed Problem



See complete Problem 272 at:
gogeometry.com/problem/p272_tangent_circles_cube_common_external_tangent.htm

Level: High School, SAT Prep, College geometry

Problem 271. Tangent Circles, the Cube of the Common external tangent

Proposed Problem



See complete Problem 271 at:
gogeometry.com/problem/p271_tangent_circles_cube_common_external_tangent.htm

Level: High School, SAT Prep, College geometry