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An angle measures 80°. What is the measure of its complement?

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Question: An angle measures 80°. What is the measure of its complement?

Options:

  1. 10°
  2. 20°
  3. 30°
  4. 40°

Correct Answer: 40°

Solution: 

Complementary angles sum to 90°. Therefore, 90° - 80° = 10°.

An angle measures 80°. What is the measure of its complement?

Practice Questions

Q1
An angle measures 80°. What is the measure of its complement?
  1. 10°
  2. 20°
  3. 30°
  4. 40°

Questions & Step-by-Step Solutions

An angle measures 80°. What is the measure of its complement?
  • Step 1: Understand that complementary angles are two angles that add up to 90 degrees.
  • Step 2: Identify the given angle, which is 80 degrees.
  • Step 3: To find the complement, subtract the given angle from 90 degrees.
  • Step 4: Calculate 90 degrees - 80 degrees.
  • Step 5: The result is 10 degrees, which is the measure of the complement.
  • Complementary Angles – Complementary angles are two angles whose measures add up to 90 degrees.
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