Topics
2. Parallel and Perpendicular Lines
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United States of America
Grades 9-12

2.01 Parallel lines and transversals

Lesson
Practice
Adaptive
Worksheet

Interactive practice questions

Select the diagram showing a pair of corresponding angles:

Two parallel lines are intersected by a transversal. The angles that are denoted with a peach-colored arc markings, are located on the same side of the transversal and outside the two parallel lines.

A

Two parallel lines are intersected by a transversal. The angles that are denoted with a purple-colored arc markings, are located on the same side of the transversal and inside the two parallel lines.

B

Two parallel lines are intersected by a transversal. The angles that are denoted with a green-colored arc markings, are located on the same side of the transversal, similarly positioned relative to the intersection.

C

Two parallel lines are intersected by a transversal. The angles that are denoted with a yellow-colored arc markings, are located on opposite sides of the transversal and inside the two parallel lines.

D
Easy
< 1min

Select the diagram showing a pair of alternate interior angles:

Easy
< 1min

Select the diagram showing a pair of consecutive interior angles:

Easy
< 1min

Consider the diagram below:

Easy
1min
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Outcomes

G.CO.A.1

Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.

G.CO.C.9

Prove theorems about lines and angles. Theorems include: vertical angles are congruent; when a transversal crosses parallel lines, alternate interior angles are congruent and corresponding angles are congruent; points on a perpendicular bisector of a line segment are exactly those equidistant from the segment's endpoints.

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