Question

An isosceles triangle has an angle that measures 120°. Which other angles could be in that isosceles triangle? 120 50 10 30

Answer 1

30
Because the sum of a triangle is 180.
Working:
180 - 120= 60
60 divided by 2 = 30 ( an isosceles triangle’s base angles are the same so if 120 is given the remaining two angles are the same )

Answer 2

Answer:

30°

Step-by-step explanation:

First angle = 120°

Remaining two angles would be congruent.

$Measure \: of \: other \: \angle s \\ \\ = \frac{180 \degree - 120 \degree}{2} \\ \\ = \frac{60 \degree}{2} \\ \\ = 30 \degree$