Question

A triangle has an angle of 35 ° and an angle of 55 °. What is the measure of the third angle? Explain how you know it.

Answer 1

Step-by-step explanation:

Sum of all angles of a triangle is 180°

Let the Unknown angle be x.

Therefore,

x+35°+55° = 180°

=> x + 90° = 180°

=> x = 90°