Question

An isosceles triangle has a base of 2x - 1, a leg of 3x - 18, and another leg of 21. Find the following:

X =

Length of the Base =

Length of the other leg =

Answer 1

x=13

Base=25

Leg=21

Explanation:

Firstly, since the triangle is an isosceles triangle, both legs measure the same. So we can write:

`3x-18=21\\3x=39\\x=13`

With x being solved, we can substitute it into the leg and the base:

Base:

`2(13)-1\\26-1\\25`

Leg (Since the other leg is 21, we can just conclude this leg to also be 21):

`3(13)-18\\39-18\\21`

If it has any units, don't forget to put the correct unit measures.