 |
|
|
Online Geometry: Isosceles Triangle 20-80-80,
Theorems and Problems
|
|
Isosceles Triangle 80-20-80 -
Table of Content
|
|
 |
|
|
 |
Langley's Problem
Adventitious angles. 20° isosceles triangle with animation.
|
|
 |
Geometry Problem 691.
Isosceles Triangle, 80-80-20 Degrees, Angles, Congruence, Mind Map, Polya. |
|
 |
Geometry Problem 688.
Triangle, Angles, 10, 20, 30, 40, 60 Degrees, Measure, Mind Map, Polya. |
|
 |
Proposed Problem 358.
Isosceles triangle 80-80-20, Circle, Angles, Congruence. |
|
 |
Proposed Problem 274.
Isosceles Triangle, 80-80-20, Angles. |
|
 |
|
|
|
|
|
|
 |
|
