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WRITING IN MATH

33.

Answer the question that was posed at the beginning of

the lesson.

How does the distance between parallel lines relate to hanging new shelves?

Include the following in your answer:

• an explanation of why marking several points equidistant from the first brace

will ensure that the braces are parallel, and

• a description of other types of home improvement projects that require that

two or more elements are parallel.

Standardized

GRID IN

34.

Segment AB is perpendicular to segment BD. Segment AB and

Test Practice

segment CD bisect each other at point X. If AB

16 and CD

20, what is the

length of BD?

35.

ALGEBRA

A coin was flipped 24 times and came up heads 14 times and tails

10 times. If the first and the last flips were both heads, what is the greatest

number of consecutive heads that could have occurred?

A

7

B

9

C

10

D

13

Maintain Your Skills

Maintain Your Skills

Mixed Review

Given the following information, determine which

C

lines, if any, are parallel. State the postulate or

6 1

D

theorem that justifies your answer.

(Lesson 3-5)

B A

5

4

5

6

36.

37.

6

2

3

2

E

F

38.

1 and

2 are supplementary.

Write an equation in slope-intercept form for each line.

y

b

(Lesson 3-4)

39. a

40. b

41. c

a

42. perpendicular to line a, contains ( 1,

4)

43. parallel to line c, contains (2, 5)

O

x

c

44.

PROOF

Write a two-column proof.

L

(Lesson 2-7)

M

Given: NL

NM

AL

BM

A

B

Prove: NA

NB

N

When Is Weather Normal?

It’s time to complete your project. Use the information and data

you have gathered about climate and locations on Earth to

prepare a portfolio or Web page. Be sure to include graphs and/or

tables in the presentation.

164 Chapter 3 Parallel and Perpendicular Lines

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Parent category: Education