What is the difference between complementary and supplementary angles?

Complementary angles add to 90°, supplementary angles add to 180°. A handy memory aid: C comes before S, and 90 comes before 180.

How do I print or save these worksheets as a PDF?

Click Print worksheet and choose your printer, or pick “Save as PDF” as the destination to keep a digital copy. The answer key prints on its own page.

Can I get a fresh set of problems?

Yes. Click New problems for a brand new randomly generated worksheet, as many times as you like.

Is this worksheet generator free?

Yes. Every generator on the site is free to use, with no account, no watermark and unlimited printing for classroom or home use.

Angles worksheet generator

Generate angle practice: classify an angle, find the missing angle in a triangle, or work with complementary and supplementary pairs.

Angles

Name: Date:

1.
Two angles of a triangle measure 99° and 35°. Find the third.
2.
Two angles of a triangle measure 59° and 95°. Find the third.
3.
Two angles of a triangle measure 61° and 51°. Find the third.
4.
Two angles of a triangle measure 25° and 116°. Find the third.
5.
Two angles of a triangle measure 100° and 62°. Find the third.
6.
Two angles of a triangle measure 57° and 108°. Find the third.
7.
Two angles of a triangle measure 92° and 77°. Find the third.
8.
Two angles of a triangle measure 70° and 40°. Find the third.
9.
Two angles of a triangle measure 58° and 48°. Find the third.
10.
Two angles of a triangle measure 82° and 79°. Find the third.
11.
Two angles of a triangle measure 72° and 81°. Find the third.
12.
Two angles of a triangle measure 83° and 64°. Find the third.
13.
Two angles of a triangle measure 56° and 26°. Find the third.
14.
Two angles of a triangle measure 46° and 41°. Find the third.
15.
Two angles of a triangle measure 80° and 27°. Find the third.
16.
Two angles of a triangle measure 42° and 27°. Find the third.
17.
Two angles of a triangle measure 70° and 95°. Find the third.
18.
Two angles of a triangle measure 48° and 41°. Find the third.
19.
Two angles of a triangle measure 20° and 109°. Find the third.
20.
Two angles of a triangle measure 85° and 23°. Find the third.

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Angles — Answer Key

Name: Date:

1.
Two angles of a triangle measure 99° and 35°. Find the third.
46°
2.
Two angles of a triangle measure 59° and 95°. Find the third.
26°
3.
Two angles of a triangle measure 61° and 51°. Find the third.
68°
4.
Two angles of a triangle measure 25° and 116°. Find the third.
39°
5.
Two angles of a triangle measure 100° and 62°. Find the third.
18°
6.
Two angles of a triangle measure 57° and 108°. Find the third.
15°
7.
Two angles of a triangle measure 92° and 77°. Find the third.
11°
8.
Two angles of a triangle measure 70° and 40°. Find the third.
70°
9.
Two angles of a triangle measure 58° and 48°. Find the third.
74°
10.
Two angles of a triangle measure 82° and 79°. Find the third.
19°
11.
Two angles of a triangle measure 72° and 81°. Find the third.
27°
12.
Two angles of a triangle measure 83° and 64°. Find the third.
33°
13.
Two angles of a triangle measure 56° and 26°. Find the third.
98°
14.
Two angles of a triangle measure 46° and 41°. Find the third.
93°
15.
Two angles of a triangle measure 80° and 27°. Find the third.
73°
16.
Two angles of a triangle measure 42° and 27°. Find the third.
111°
17.
Two angles of a triangle measure 70° and 95°. Find the third.
15°
18.
Two angles of a triangle measure 48° and 41°. Find the third.
91°
19.
Two angles of a triangle measure 20° and 109°. Find the third.
51°
20.
Two angles of a triangle measure 85° and 23°. Find the third.
72°

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Frequently asked questions

What is the difference between complementary and supplementary angles?: Complementary angles add to 90°, supplementary angles add to 180°. A handy memory aid: C comes before S, and 90 comes before 180.
How do I print or save these worksheets as a PDF?: Click Print worksheet and choose your printer, or pick “Save as PDF” as the destination to keep a digital copy. The answer key prints on its own page.
Can I get a fresh set of problems?: Yes. Click New problems for a brand new randomly generated worksheet, as many times as you like.
Is this worksheet generator free?: Yes. Every generator on the site is free to use, with no account, no watermark and unlimited printing for classroom or home use.