issb mathematics MCQ #105

In an isosceles triangle, the vertex angle is 40 degrees. What is the measure of each base angle?

issb mathematics MCQ #105

  1. Question 1

    Q1. In an isosceles triangle, the vertex angle is 40 degrees. What is the measure of each base angle?

    • A) 60 degrees
    • B) 65 degrees
    • C) 70 degrees
    • D) 80 degrees

    Answer: 70 degrees

    Explanation: The two base angles are equal and their sum with 40 degrees is 180 degrees. Each base angle is 70 degrees.