grade 10 · GEOM-003

Find a missing triangle angle

Connect the three interior angles of a triangle to a total of 180 degrees.

Learn togetherFresh problem · seed 340105112

A triangle has interior angles measuring \(55^\circ\), \(69^\circ\), and \(x^\circ\). Find \(x\).

Let's work it out together.

Work through one checkpoint at a time. Your answer area opens after the reasoning.

Checkpoint 1

The three interior angles of every triangle total 180 degrees.
Checkpoint 2

Add the two known angles.
Checkpoint 3

Subtract that sum from 180 degrees.

Your answer