Question

The base angle of an isosceles triangle measures 54°. What is the measure of its vertex angle?

Answer 1

Hope this helps :) If you have a doubt just comment :)

Answer 2

♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫

➷ Isosceles base angles are equal

Therefore, the other base angle would also be 54 degrees

Angles in a triangle total to 180 degrees

Now you can calculate:

180 - (54 + 54) = 72

The vertex angle is 72 degrees.

✽

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡