Interactive Triangles
Read about Triangles, and then play with them here.
They rotate, too! So you can become familiar with them from all angles.
images/triangle.js?mode=choose
Try These Challenges!
In "Any" mode: drag the corners of the triangle to see if you can make:
- An Equilateral Triangle (all three sides the same length, and all angles 60°)
- A Right Triangle (one angle exactly 90°)
- An Obtuse Triangle (one angle greater than 90°)