The dash on each side of the triangle show that those three sides have the same measurement. Therefore, divide 24 by 3 to get 8, which is the measurement for each side of the triangle.
Meaning your answer is:
a. 8cm, 8cm, 8cm
A
The dash on every side means that all 3 sides are exactly the same.
P = 24
8 + 8 + 8 = 24 or 8*3 = 24 so its
