Question

1. three adjacent angles form a right angle. two of the angles measure 20° and 35°. find the third angle.

Explanation:

Step1: Recall right angle measure

A right angle measures \(90^\circ\).

Step2: Sum of known angles

Sum of the two given angles: \(20^\circ + 35^\circ = 55^\circ\).

Step3: Find the third angle

Subtract the sum from \(90^\circ\): \(90^\circ - 55^\circ = 35^\circ\).

Answer:

The measure of the third angle is \(35^\circ\).