Topics
6. 2D Geometry
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United States of AmericaVA
Grade 8

6.01 Angle relationships

Lesson
Practice
Adaptive
Worksheet

Interactive practice questions

Which of these diagrams shows a pair of adjacent angles?

Four segments intersect at a point forming four unequal angles. Two unequal angles are marked with shaded arcs. The two marked angles do not share a common segment. One angle is marked with a blue-shaded arc. Another angle is marked with a yellow-shaded arc. The endpoints of the segments are marked with solid dots.
A

Three segments intersect at a point. Two angles sharing the same segment are marked with shaded arcs. One angle is marked with a yellow-shaded arc. Another angle is marked with a violet-shaded arc. The endpoints of segments are marked with solid dots.

B

Four segments intersect at a point forming four unequal angles. Two unequal angles are marked with shaded arcs. The two marked angles do not share a common segment. One angle is marked with a yellow-shaded arc. Another angle is marked with a green-shaded arc. The endpoints of the segments are marked with solid dots.
C

Two lines intersect at a point, forming four angles around the intersection. Two angles opposite each other are marked with identical yellow-shaded arcs. The intersection of the lines is marked with a solid dot.
D
Easy
< 1 min

Which of these diagrams shows a pair of vertical angles?

Easy
< 1 min

Which of these diagrams shows a pair of complementary angles?

Easy
< 1 min

Which of these diagrams shows a pair of supplementary angles?

Easy
< 1 min
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Outcomes

8.MG.1

The student will use the relationships among pairs of angles that are vertical angles, adjacent angles, supplementary angles, and complementary angles to determine the measure of unknown angles.

8.MG.1a

Identify and describe the relationship between pairs of angles that are vertical, adjacent, supplementary, and complementary.

8.MG.1b

Use the relationships among supplementary, complementary, vertical, and adjacent angles to solve problems, including those in context, involving the measure of unknown angles.

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