Allday Education

Free Angle Relationships Worksheet

Ten angle-relationship problems — vertical, complementary, and supplementary pairs — with a key.

Answer key included
Name: Date:
Angle Relationships
1.
63∘63^\circ
x∘x^\circ
2.
90∘90^\circ
x∘x^\circ
3.
80∘80^\circ
x∘x^\circ
4.
112∘112^\circ
x∘x^\circ
5.
75∘75^\circ
x∘x^\circ
6.
147∘147^\circ
x∘x^\circ
7.
57∘57^\circ
x∘x^\circ
8.
98∘98^\circ
x∘x^\circ
9.
115∘115^\circ
x∘x^\circ
10.
60∘60^\circ
x∘x^\circ
Andy · alldayeverydaymath.com
Name: Answer KeyDate:
Angle Relationships
1.
63∘63^\circ
x∘x^\circ
Answer: 117∘117^\circ
2.
90∘90^\circ
x∘x^\circ
Answer: 90∘90^\circ
3.
80∘80^\circ
x∘x^\circ
Answer: 80∘80^\circ
4.
112∘112^\circ
x∘x^\circ
Answer: 68∘68^\circ
5.
75∘75^\circ
x∘x^\circ
Answer: 75∘75^\circ
6.
147∘147^\circ
x∘x^\circ
Answer: 33∘33^\circ
7.
57∘57^\circ
x∘x^\circ
Answer: 57∘57^\circ
8.
98∘98^\circ
x∘x^\circ
Answer: 82∘82^\circ
9.
115∘115^\circ
x∘x^\circ
Answer: 65∘65^\circ
10.
60∘60^\circ
x∘x^\circ
Answer: 120∘120^\circ
Andy · alldayeverydaymath.com

Scroll to see all 10 problems and the answer key on its own page. Printing includes every page.

About this worksheet

Students find a missing angle from vertical, complementary, and supplementary relationships. The mixed set forces them to identify the relationship first instead of applying one rule on autopilot.

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