# Unit 3 test parallel and perpendicular lines answer key pdf

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Unit 3 parallel and perpendicular lines Homework 2, please help quickly

Asked by wiki @ in **Mathematics** viewed by 200 People

Unit 3 parallel and perpendicular lines Homework 2, please help quickly

Answered by wiki @

**Angles **can be **congruent **based n several **theorems**; some of these **theorems **are: **corresponding angles**, **vertical angles**, **alternate exterior angles **and several others.

The values of x and y are:

- 5.
- 6.
- 7.
- 8.
- 9. and
- 10. and
- 11. and
- 12. and

__Question 5:__

Angles (9x + 2) and 119 are **alternate angles**.

**Alternate angles **are equal. So, we have:

Subtract 2 from both sides

Divide both sides by 9

__Question 6:__

Angles (12x - 8) and 104 are **interior angles.**

**Interior angles **add up to 180. So, we have:

Collect like terms

Divide both sides by 12

__Question 7:__

Angles (5x + 7) and (8x - 71) are **alternate exterior angles.**

**Alternate exterior angles **are equal. So, we have:

Collect like terms

Divide both sides by 3

__Question 8:__

Angles (4x - 7) and (7x - 61) are **corresponding angles.**

**Corresponding angles **are equal. So, we have:

Collect like terms

Divide both sides by -3

__Question 9:__

Angles (9x + 25) and (13x - 19) are **corresponding angles.**

**Corresponding angles **are equal. So, we have:

Collect like terms

Divide both sides by -4

Angles (17y + 5) and (13x - 19) are **supplementary angles.**

So, we have:

Substitute 11 for x

Subtract 5 from both sides

Divide both sides by 17

__Question 10:__

Angles (3x - 29) and (6x - 7) add up to **180**

So, we have:

Collect like terms

Divide both sides by 9

Angles (3x - 29) and (8y + 17) are **supplementary angles.**

So, we have:

Substitute 24 for x

Collect like terms

Divide both sides by 8

__Question 11:__

Angles (7x - 23) and (49 + 3x) are **corresponding angles**

So, we have:

Collect like terms

Divide both sides by 4

Angles 3x and (11y - 1) are **corresponding angles**.

So, we have:

Substitute 18 for x

Collect like terms

Divide both sides by 11

__Question 12:__

Angles (5x - 38) and (3x - 4) are **corresponding angles**

So, we have:

Collect like terms

Divide both sides by 2

Angles (7y - 20) and (5x - 38) are **angles **at the **other legs **of a **right-angled triangle**.

So, we have:

Substitute 17 for x

Collect like terms

Divide both sides by 7

Read more about **congruence angles** at:

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Unit 3 parallel and perpendicular lines Homework 2, please help quickly

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Unit 3 parallel and perpendicular lines Homework 2, please help quickly

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Unit 3 parallel and perpendicular lines homework 4 parallel line proofs
PLEASE HELP!!!!!!!!!!!
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Unit 3 parallel and perpendicular lines Homework 2, please help quickly

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Unit 3 parallel and perpendicular lines Homework 2, please help quickly

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2-4 Additional Practice
Parallel and Perpendicular LinesDetermine whether this is parallel, perpendicular, or niether. y=3x+5-3x-y=9y-7x=314x-2y=28

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