Question

The vertex angle of an isosceles triangle measures 120⁰. Find the measure of each of its base angles.​

Answer 1

Answer:

X=45

Step-by-step explanation:

Now

Letthebaseanglebex

then

x+x+90=180

2x=180−90

2x=90

x=

2

90

∴x=45

Hence,thebaseangleoftheangleofisoscelestriangleis45

Answer 2

Let each base angle of isosceles triangle be x.

The two angles are equal in isosceles triangle....

x + x + 120° = 180° (Angle sum property of traingle)

2x + 120° = 180°

2x = 60°

x = 30°

Each of its base angle is 30°.