Angle Relationships Worksheet

Grades K-8 Worksheets

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Identifying Triangles, Quadrilaterals, Pentagons, Hexagons, and Cubes Worksheets
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Use what you know about the relationships between angles to solve the problems. For help, see this lesson on Angle Relationships.

1. Complementary angles add to a total of   90°   .

2. Supplementary angles add to a total of   180°  .

3. Opposite angles are   equal   in value.

4. If two angles are supplementary and one equals 65°, then the other equals   115°  .

5. Corresponding angles are equal when two   parallel   lines are intersected by a transversal.

6. The sum of the interior angles in a triangle is   180°   .

7. The sum of the interior angles in a quadrilateral is   360°   .

8. Each angle in an equilateral triangle has a value of   60°   .

9. An isosceles triangle has   2   angles that are equal in value.

10. If a triangle has an angle of 40° and angle of 95°, the third angle has a value of   45°   .

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Related Resources

The various resources listed below are aligned to the same standard, (7G05) taken from the CCSM (Common Core Standards For Mathematics) as the Geometry Worksheet shown above.

Use facts about supplementary, complementary, vertical, and adjacent angles in a multi-step problem to write and solve simple equations for an unknown angle in a figure.


Lines and Angles


Similar to the above listing, the resources below are aligned to related standards in the Common Core For Mathematics that together support the following learning outcome:

Solve real-life and mathematical problems involving angle measure, area, surface area, and volume