Question

The base of an isosceles triangle is half the length of each of its congruent sides.

If the perimeter of the triangle is 120 inches, what is the length of the base?

A. 12 inches

B. 24 inches

C. 16 inches

D. 6 inches

Answer 1

please help i am really stuck on this question

Answer 2

Isosceles triangles in particular, the base angles have the same measure
Or A = C

Answer 3

A = \frac{ bh _{b} }{ ? }}\]

Answer 4

\[\frac{ bh _{b}}{ 2 }\]

Answer 5

Here's your triangle.
x = base
2x = each of the congruent sides.
Add all the sides up to equal 120.
x + 2x + 2x = 120
Simplify.
5x = 120
x = 24
Base would = 24 inches.

Answer 6

thanks :D

Answer 7

No problem!