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Isosceles Triangle 80-20-80, Theorems and Problems - Table of Content

Isosceles triangle 80-20-80

Langley's Problem Adventitious angles. 20 isosceles triangle with animation.
 

Isolines of Langley's Problem

Geometric Art: Isolines or Contour Lines of Langley's Problem, Isosceles Triangle 80-20-80 Degrees, Geometry for Kids, iPad, Software

Geometry problem 1341

Problem 1341.
Geometry Problem 1341: Isosceles Triangle, 80-20-80 Degrees, Circumcenter, Angle Bisector.

Geometry problem 1274

Geometry Problem 1274.
Isosceles Triangle, 80-20-80 Degrees, Area, Inradius, Circumradius, Angle Bisector, Metric Relations, Measurement.

Geometry Problem 1038

Geometry Problem 1038.
Isosceles Triangle, Angle, 80, 20, 25, 65 Degrees.

Isosceles triangle 80, 20, 20 degrees

Geometry Problem 691.
Isosceles Triangle, 80-80-20 Degrees, Angles, Congruence, Mind Map, Polya
.

Geometry Problem 688, Triangle, 60 Degrees, Mind Map

Geometry Problem 688.
Triangle, Angles, 10, 20, 30, 40, 60 Degrees, Measure, Mind Map, Polya
.

Isosceles triangle 80 80 20

Proposed Problem 358.
Isosceles triangle 80-80-20, Circle, Angles, Congruence.

Isoscele triangle 80-80-20

Proposed Problem 274.
Isosceles Triangle, 80-80-20, Angles.

Triangle, cevian, equal segments, angles, 80-20 degrees

Problem 10.
Triangle, cevian, equal segments, angles, 80-20 degrees
Solution.

 

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Last updated Aug 10, 2017