a²+b²=c²
Step 1 of 5
Triangle
📐
Step 1 of 5
Meet the Right Triangle
This is a right triangle - it has one 90° angle (the corner). The two shorter sides are called 'a' and 'b'.
The longest side (opposite the right angle) is called the hypotenuse 'c'.
Visual Proof
a² = 9
+
b² = 16
=
c² ≈ 25
9+16=25
9
green cubes
16
red cubes
25
purple cubes
Adjust Triangle
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