J.1

Exterior Angle Theorem

An exterior angle of a triangle equals the two interior angles not next to it.

Level
Medium
Problems
Daniel Math Academy · Grade 8 Math

Exterior Angle Theorem

Skill J.1 · Triangle & polygon angles · ★★☆ Medium

Name
 
Date
 
Score/ 6

Find each missing angle.

Example
50°70°?
? =

Think: An exterior angle equals the two interior angles that are not next to it: .

  1. 1
    70°?110°
    ? = 
  2. 2
    80°?140°
    ? = 
  3. 3
    80°?120°
    ? = 
  4. 4
    75°?130°
    ? = 
  5. 5
    ?65°135°
    ? = 
  6. 6
    60°?100°
    ? = 
Daniel Math Academy · danielmath.comWorksheet #bw4e4ty · Page 1 / 2
Daniel Math Academy · Grade 8 Math

Answer Key

J.1 Exterior Angle Theorem · ★★☆ Medium

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  6. 6
Daniel Math Academy · danielmath.comWorksheet #bw4e4ty · Answer Key · Page 2 / 2