Question

a triangle has side lengths of 15 centimeters, 10 centimeters, and 15 centimeters. is this triangle scalene?
yes
no

Explanation:

Step1: Recall scalene triangle definition

A scalene triangle has all three sides of different lengths.

Step2: Compare triangle side lengths

The triangle has sides 15 cm, 10 cm, and 15 cm. Here, two sides (15 cm) are equal, so not all sides are different.

Answer:

no