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In a triangle, if one angle is 50 degrees and another is 60 degrees, what is the

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Question: In a triangle, if one angle is 50 degrees and another is 60 degrees, what is the measure of the third angle?

Options:

  1. 70 degrees
  2. 80 degrees
  3. 90 degrees
  4. 100 degrees

Correct Answer: 70 degrees

Solution: 

The sum of angles in a triangle is 180 degrees. Therefore, the third angle = 180 - (50 + 60) = 70 degrees.

In a triangle, if one angle is 50 degrees and another is 60 degrees, what is the

Practice Questions

Q1
In a triangle, if one angle is 50 degrees and another is 60 degrees, what is the measure of the third angle?
  1. 70 degrees
  2. 80 degrees
  3. 90 degrees
  4. 100 degrees

Questions & Step-by-Step Solutions

In a triangle, if one angle is 50 degrees and another is 60 degrees, what is the measure of the third angle?
  • Step 1: Understand that the sum of all angles in a triangle is always 180 degrees.
  • Step 2: Add the two given angles together: 50 degrees + 60 degrees = 110 degrees.
  • Step 3: Subtract the sum of the two angles from 180 degrees to find the third angle: 180 degrees - 110 degrees = 70 degrees.
  • Step 4: Conclude that the measure of the third angle is 70 degrees.
  • Triangle Angle Sum Theorem – The sum of the interior angles of a triangle is always 180 degrees.
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