Right triangle with legs 3 and 4: find the hypotenuse

An example figure from the Triangle Generator.

Right triangle ABC with the right angle at B, leg AB labeled 3, leg BC labeled 4 and the hypotenuse CA labeled x — A right triangle ABC drawn to scale, with a right-angle square at B. The legs are labeled with their lengths, 3 along the bottom (AB) and 4 up the side (BC), and the hypotenuse CA is labeled x. Use it for the Pythagorean theorem.

Edit this figure Download PNG

Editing opens it in the Triangle Generator with these settings, to change anything and copy or download your own.

Answer key

CA = 5
∠A = 53.1°
∠C = 36.9°

Free to use in your tests, worksheets, slides or anything else. Open source under Apache 2.0. How to reuse our figures

More Triangle examples

Make your own in the Triangle Generator →