Question

a triangle has angle measurements of 69°, 69°, and 42°. is this triangle scalene? yes no

Explanation:

Step1: Recall scalene triangle definition

A scalene triangle has all three angles of different measures (and all sides of different lengths).

Step2: Compare given angles

The triangle has angles \(69^\circ\), \(69^\circ\), and \(42^\circ\). Here, two angles are equal (\(69^\circ = 69^\circ\)), so not all angles are different.

Answer:

no