Lesson Worksheet: Complementary and Supplementary Angles Mathematics • 7th Grade

In this worksheet, we will practice identifying complementary and supplementary angles and applying these properties in order to find a missing angle.

Q1:

Classify the pair of angles as complementary, supplementary, or neither.

  • Asupplementary
  • Bneither
  • Ccomplementary

Q2:

State whether the given pair of angles is supplementary, complementary, or neither.

  • Aneither supplementary nor complementary
  • Bcomplementary
  • Csupplementary

Q3:

Does every right triangle contain a pair of complementary angles?

  • ANo
  • BYes

Q4:

If 𝐴 and 𝐵 are complementary, 𝑚𝐴=𝑚𝐶, and 𝐷 complements 𝐶, which of the following is equal to 𝑚𝐵?

  • A𝑚𝐴
  • B𝑚𝐶
  • C𝑚𝐷

Q5:

Find the measure of the angle which supplements the angle measuring 99.

Q6:

Find 𝑚𝐷𝐵𝐶.

Q7:

Given that the two angles are supplementary, find the value of 𝑥.

Q8:

Find the value of 𝑥.

Q9:

Find the value of 𝑥.

Q10:

Classify the following pair of angles as complementary, supplementary, vertical, or neither.

  • Acomplementary
  • Bneither
  • Cvertical
  • Dsupplementary

This lesson includes 68 additional questions and 455 additional question variations for subscribers.

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