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Exterior Angle Property Worksheet

Grade 7 math worksheet focusing on the exterior angle property of triangles, including calculations and problem-solving.

Grade 7 Math GeometryExterior Angle Property
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Includes

2 Short AnswerCustomFill in the BlanksMultiple Choice

Standards

CCSS.MATH.CONTENT.7.G.A.2CCSS.MATH.CONTENT.7.G.B.5

Topics

mathgeometryexterior angletrianglesgrade 7
7 sections · Free to use · Printable
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Exterior Angle Property of Triangles

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Read each question carefully and use the exterior angle property of triangles to find the unknown angles or answer the questions. Show all your work.

1. In your own words, explain the Exterior Angle Property of a triangle.

2. Find the value of x in the following triangle:

70°40°x

3. Determine the measure of the exterior angle y:

65°55°y

4. The exterior angle of a triangle is equal to the sum of its two   interior angles.

5. An exterior angle and its adjacent interior angle always form a   pair, meaning their sum is   degrees.

6. If two interior opposite angles of a triangle are 50° and 60°, what is the measure of the exterior angle?

a

10°

b

110°

c

70°

d

180°

7. If an exterior angle of a triangle is 130° and one of its interior opposite angles is 75°, what is the measure of the other interior opposite angle?

a

55°

b

65°

c

105°

d

180°

8. A triangle has interior angles measuring 60°, 70°, and 50°. What are the measures of its three exterior angles?

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