# 3.7: Chapter 3 Review

Created by: CK-12

**Keywords and Theorems**

- Parallel
- When two or more lines lie in the same plane and never intersect.

- Skew Lines
- Lines that are in different planes and never intersect.

- Parallel Postulate
- For a line and a point not on the line, there is exactly one line parallel to this line through the point.

- Perpendicular Line Postulate
- For a line and a point not on the line, there is exactly one line parallel to this line through the point.

- Transversal
- A line that intersects two distinct lines. These two lines may or may not be parallel.

- Corresponding Angles
- Two angles that are in the “same place” with respect to the transversal, but on different lines.

- Alternate Interior Angles
- Two angles that are on the interior of and , but on opposite sides of the transversal.

- Alternate Exterior Angles
- Two angles that are on the exterior of and , but on opposite sides of the transversal.

- Same Side Interior Angles
- Two angles that are on the same side of the transversal and on the interior of the two lines.

- Corresponding Angles Postulate
- If two parallel lines are cut by a transversal, then the corresponding angles are congruent.

- Alternate Interior Angles Theorem
- If two parallel lines are cut by a transversal, then the alternate interior angles are congruent.

- Alternate Exterior Angles Theorem
- If two parallel lines are cut by a transversal, then the alternate exterior angles are congruent.

- Same Side Interior Angles Theorem
- If two parallel lines are cut by a transversal, then the same side interior angles are supplementary.

- Converse of Corresponding Angles Postulate
- If corresponding angles are congruent when two lines are cut by a transversal, then the lines are parallel.

- Converse of Alternate Interior Angles Theorem
- If two lines are cut by a transversal and alternate interior angles are congruent, then the lines are parallel.

- Converse of the Alternate Exterior Angles Theorem
- If two lines are cut by a transversal and the alternate exterior angles are congruent, then the lines are parallel.

- Converse of the Same Side Interior Angles Theorem
- If two lines are cut by a transversal and the consecutive interior angles are supplementary, then the lines are parallel.

- Parallel Lines Property
- The Parallel Lines Property is a transitive property that can be applied to parallel lines.

- Theorem 3-1
- If two lines are parallel and a third line is perpendicular to one of the parallel lines, it is also perpendicular to the other parallel line.

- Theorem 3-2
- If two lines are parallel and a third line is perpendicular to one of the parallel lines, it is also perpendicular to the other parallel line.

- Distance Formula
- .

## Review

Find the value of each of the numbered angles below.

## Texas Instruments Resources

*In the CK-12 Texas Instruments Geometry FlexBook, there are graphing calculator activities designed to supplement the objectives for some of the lessons in this chapter. See http://www.ck12.org/flexr/chapter/9688.*

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## Tags:

Alternate Exterior Angles Theorem
Alternate Interior Angles Theorem
angles
(18 more)
CK.MAT.ENG.SE.1.Geometry-Basic.3
CK.MAT.ENG.SE.2.Geometry.3
coordinate plane
Corresponding Angles Postulate
distance formula
equations of lines
Lines
Parallel Line Postulate
Parallel Lines
Perpendicular Line Postulate
perpendicular lines
planes
proofs
proving parallel lines
Same Side Interior Angles Theorem
slopes
the Distance Formula
transversals

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## Date Created:

Feb 22, 2012## Last Modified:

Dec 13, 2013
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