Parallel Lines and Transversals

Presentation

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Mathematics

•

9th Grade

•

Practice Problem

•

Medium

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CCSS

8.G.A.5, 7.G.B.5

Standards-aligned

Isabel Portillo

Used 50+ times

FREE Resource

9 Slides • 5 Questions

Parallel Lines and Transversals

by HSE Academy

Angle Basics

Angle Labels

Vertical Angles

Adjacent Angles

Adjacent Angles: 2 angles that share the same ray/line
For example:
- ∠1 is adjacent to ∠2

Angles

Parallel and Transversal

Parallel: These are lines that never touch
Transversal: A line intersecting 2 or more parallel lines
Line M is parallel to Line N
Line P is the transversal, creating those 8 angles

Corresponding Angles

Corresponding angles are "matching" and they have the same measure
For example:
- ∠1 and ∠5
- ∠2 and ∠6
- ∠3 and ∠7
- ∠4 and ∠8

Algebra equation skills can be used to find a missing angle

Find u.

All angles = 180

6u + 89 + 37 = 180

6u + 126 = 180

6u = 54

u = 9

Triangle Angles

Multiple Choice

The measure of ∠3 is $75\degree$ . What is the measure of ∠1?

$15\degree$

$75\degree$

$105\degree$

$115\degree$

Multiple Choice

The measure of ∠7 is $115\degree$ . What is the measure of ∠4?

$25\degree$

$115\degree$

$245\degree$

$65\degree$

Multiple Choice

Which angle is equal to ∠2?

∠8

∠7

∠5

∠1

Multiple Choice

What is $m\angle1$ ?

108

180

121

Multiple Choice

The measure of an angle is $47\degree$ . What is the measure of its complementary angle?

$94\degree$

$53\degree$

$43\degree$

$133\degree$

Parallel Lines and Transversals

by HSE Academy

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