Two angles of a triangle are 50° and 30°. Then, the third angle of the triangle is :

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CTET Official Paper-I (Held On: 07 Jul, 2024)
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  1. 100°
  2. 40°
  3. 60°
  4. 80°

Answer (Detailed Solution Below)

Option 1 : 100°
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Detailed Solution

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Concept use:

  • Sum of Angles in a Triangle: The sum of the three interior angles in any triangle is always 180º. This is known as the Triangle Angle Sum Property.

Calculation:

Third Angle = 180º - (50º + 30º)

Third Angle = 180º - 80º

Third Angle = 100º

Thus, the third angle of the triangle is 100º.

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