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Two straight lines intersect and form vertical angles. If one of the angles measures , what is the measure of the other vertical angle?

easy MCQ 1 mark Class 9 · Mathematics · Lines and Angles
  1. 70°
  2. 110°
  3. 180°
  4. 290°
Answer
110°

The correct answer is 110° — Step 2: Hence the other vertical angle is also .

Step-by-step solution

  1. Step 1: In a pair of vertical angles the measures are equal.
  2. Step 2: Hence the other vertical angle is also .
Common mistake: Assuming vertical angles are supplementary

Concept tested: Vertical angles

Published · How this solution was prepared and checked

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