The Magic of 180°

Drag to protractor

{{wedge.angle}}°
Assemble the corners of a triangle
{{placed.angle}}°
Forms a straight line!

Triangle Sorter

Sort by angles

Find all {{ s2.targetType.toUpperCase() }} triangles
{{ s2.targetType }} Drop
Drop here
Sorted!

Can it connect?

Slide to build

Any two sides must add up to be greater than the third side!
{{s3.c}} {{s3.a}} {{s3.b}} Gap too wide!
a {{s3.a}}
b {{s3.b}}
c {{s3.c}}
Triangle formed!

Find the Missing Angle

Tap to dial

Angles: , ,
Too large! (>180°)
Needs more...
Perfect 180°!
Value of x
{{s4.currentX}}°
{{s4.ang1}}° + {{s4.ang2}}° + {{s4.ang3}}° = {{s4.totalAng}}°
🏆

Geometry Master!

You've mastered interior angles, classified triangles, tested side lengths, and solved for x!