Please enter the following details
Free Daily Targets & Mocks
Study Material & Formulas PDFs
1 on 1 Mentorship
Question 144
In in a triangle ABC, AB = AC. BC is extended to D. and ACD = 120°, then A is equal to
Solution
BC is extended to D. Hence, Angle on line BC = 180 degrees.
We have been given that, Angle ACD = 120 degrees.
=> Angle ACB = 60 degrees. Angle ABC = Angle ACB - since the given triangle is isosceles.
Angle A + Angle B + Angle C = 180 degrees (Angles in a triangle)
=> Angle B = 180 -60 -60
Angle B = 60 degrees.
Option B is the right answer.
Create a FREE account and get:
- Free SSC Study Material - 18000 Questions
- 230+ SSC previous papers with solutions PDF
- 100+ SSC Online Tests for Free
