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In triangle ABC, if angle A = 60 degrees and angle B = 70 degrees, what is angle

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Question: In triangle ABC, if angle A = 60 degrees and angle B = 70 degrees, what is angle C?

Options:

  1. 50 degrees
  2. 60 degrees
  3. 70 degrees
  4. 80 degrees

Correct Answer: 50 degrees

Solution: 

Angle C = 180 - (angle A + angle B) = 180 - (60 + 70) = 50 degrees.

In triangle ABC, if angle A = 60 degrees and angle B = 70 degrees, what is angle

Practice Questions

Q1
In triangle ABC, if angle A = 60 degrees and angle B = 70 degrees, what is angle C?
  1. 50 degrees
  2. 60 degrees
  3. 70 degrees
  4. 80 degrees

Questions & Step-by-Step Solutions

In triangle ABC, if angle A = 60 degrees and angle B = 70 degrees, what is angle C?
Correct Answer: 50 degrees
  • Step 1: Understand that the sum of all angles in a triangle is always 180 degrees.
  • Step 2: Identify the given angles: angle A is 60 degrees and angle B is 70 degrees.
  • Step 3: Add angle A and angle B together: 60 + 70 = 130 degrees.
  • Step 4: Subtract the sum of angle A and angle B from 180 degrees to find angle C: 180 - 130 = 50 degrees.
  • Step 5: Conclude that angle C is 50 degrees.
  • Triangle Angle Sum Theorem – The sum of the interior angles of a triangle is always 180 degrees.
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