Find solutions to your problems with the expert advice available on IDNLearn.com. Get accurate and detailed answers to your questions from our dedicated community members who are always ready to help.
Answer:
30.
Step-by-step explanation:
The 120 degree has to be the vertex angle.
The other 2 angles in the triangle will be congruent as the triangle is isosceles.
These 2 are both = (180-120) / 2
= 60/2
= 30 degrees.