Create a free account now and get 3 full lessons, completely free. Get my 3 free lessons

Worldwide: choose your country
Grade 7 math · S.2 · Angles and triangles

Supplementary angles

Supplementary angles add up to 180 degrees.

Loading a question…

See worked examples
  1. Two angles are supplementary. One angle is 169°. How many degrees is the other angle?

    Answer: 11

  2. Two angles are supplementary. One angle is 26°. How many degrees is the other angle?

    Answer: 154

  3. Two angles are supplementary. One angle is 42°. How many degrees is the other angle?

    Answer: 138

Tip: Supplementary angles add up to 180 degrees.

Print a worksheet of this skill New questions and an answer key, free.

Up next

Print a free worksheet with answers (20 questions).

Practice without limits

Members practice as much as they like, every day, and get the printable packs and lessons too.