# McGraw Hill My Math Grade 4 Chapter 14 Lesson 1 Answer Key Draw Points, Lines, and Rays

All the solutions provided in McGraw Hill My Math Grade 4 Answer Key PDF Chapter 14 Lesson 1 Draw Points, Lines, and Rays will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 4 Answer Key Chapter 14 Lesson 1 Draw Points, Lines, and Rays

A point is an exact location that is represented by a dot. A line is a straight set of points that extends in opposite directions without ending.

Math in My World

Example 1

Molly drew the figure shown. Identify the figure she drew.

The figure extends in opposite directions. The arrows indicate that it extends without ending. It is a line.

This line is labeled with point X and point Y. There are different ways to represent this line, such as line XY or $$\overleftrightarrow{X Y}$$.
So, Molly drew _________________.
A line is a straight set of points that extends in opposite directions without ending.

Example 2

Draw a figure that could be represented by $$\overline{C D}$$.
$$\overline{C D}$$ represents a line segment with endpoints C and D.

A line segment is part of a line between two endpoints. Here, the endpoints are represented using C and D with blue color.

Example 3

Identify the figure at the right.

The figure has one endpoint and extends in one direction without ending. It is a ray.
The endpoint is A. The ray extends in the direction of point B.
So, the figure is ______________.
A ray is a part of a line that has one endpoint and extends in one direction without ending.

Guided Practice

Identify each figure.

Question 1.

QR represents a line segment. A line segment is part of a line between two endpoints.

Question 2.

FB represents a line. A line is a straight set of points that extends in opposite directions without ending.

Question 3.

AC represents a ray. A ray is a part of a line that has one endpoint and extends in one direction without ending.

Question 4.

DF represents a line. A line is a straight set of points that extends in opposite directions without ending.

Talk Math

How are lines and line segments alike? How are they different?

Answer: 1) A line is a straight set of points that extends in opposite directions without ending. The line segment does not extend in both directions since it has a starting and an ending point.
2) The line doesn’t have an endpoint. A line segment is part of a line between two endpoints.
3) The length of the line cannot be measured. The length of the line segment can be measured.
4) The line is represented as – AB and a horizontal line with arrow marks above the AB, i.e. $$\overleftrightarrow{A B}$$. Whereas, the line segment is denoted as – AB and a horizontal line above the AB, i.e. $$\overline{A B}$$.

Independent Practice

Identify each figure.

Question 5.

FG represents a ray. A ray is a part of a line that has one endpoint and extends in one direction without ending.

Question 6.

HK represents a line segment. A line segment is part of a line between two endpoints.

Question 7.

LM represents a line. A line is a straight set of points that extends in opposite directions without ending.

Question 8.

NO represents a line segment. A line segment is part of a line between two endpoints.

Draw each figure.

Question 9.
point T

An exact location represented by a dot is a point. Here T represents a point which is indicated as blue dot.

Question 10.
$$\overleftrightarrow{Y Z}$$

A line is a straight set of points that extends in opposite directions without ending. YZ represents a line where it extends infinitely.

Question 11.
$$\overrightarrow{C R}$$

A ray is a part of a line that has one endpoint and extends in one direction without ending. CR represents a ray with one end point C and extends infinitely in one direction.

Question 12.
$$\overline{A W}$$

A line segment is part of a line between two endpoints. AW here indicates a line.

Question 13.
$$\overleftrightarrow{S N}$$

A line is a straight set of points that extends in opposite directions without ending. SN represents a line where it extends infinitely.

Question 14.
$$\overrightarrow{T J}$$

A ray is a part of a line that has one endpoint and extends in one direction without ending. TJ represents a ray with one end point T and extends infinitely in one direction.

Problem Solving

Question 15.
Identify the figure that is shown on the stop sign.
Answer: The figure that is shown on the stop sign is a red colored octagon. Octagon is a eight-sided polygon. So it has eight line segments in the figure which forms as an octagon. A line segment is part of a line between two endpoints.

Question 16.
Mathematical PRACTICE Use Math Tools Use a pencil to draw a different type of traffic sign than a stop sign. Then use a crayon or marker to show a line segment on the sign.

NO PARKING traffic signal is shown in the above figure. It has a line segment enclosed in a circle. The line segment is represented along side using a black line segment in the sign. A line segment is part of a line between two endpoints.

Question 17.
Mathematical PRACTICE Model Math Name three real-world examples of line segments.
Answer: The real life examples of a line segments are edges of a wall, table edge, ruler, pencil, edges of a paper.

HOT Problems

Question 18.
Mathematical PRACTICE Use Math Tools Draw a line segment that is greater than 2 inches and less than 5 inches.

The above figure represents a line segment that is greater than 2 inches and less than 5 inches. A line segment is part of a line between two endpoints. The endpoints are represented here as A and B.

Question 19.
Building on the Essential Question Explain the similarities and differences of lines and line segments.
Answer: 1. A line is a straight set of points that extends in opposite directions without ending. The line segment does not extend in both directions since it has a starting and an ending point.
2. The line doesn’t have an endpoint. A line segment is part of a line between two endpoints.
3. The length of the line cannot be measured. The length of the line segment can be measured.
4. The line is represented as – XY and a horizontal line with arrow marks above the XY, i.e. $$\overleftrightarrow{X Y}$$. Whereas, the line segment is denoted as – XY and a horizontal line above the XY, i.e. $$\overline{X Y}$$.

### McGraw Hill My Math Grade 4 Chapter 14 Lesson 1 My Homework Answer Key

Practice

Identify each figure.

Question 1.

VZ represents a line segment. A line segment is part of a line between two endpoints.

Question 2.

MN represents a line. A line is a straight set of points that extends in opposite directions without ending.

Draw each figure.

Question 3.
$$\overline{Y B}$$

A line segment is part of a line between two endpoints. YB here indicates a line.

Question 4.
$$\overrightarrow{L R}$$

A ray is a part of a line that has one endpoint and extends in one direction without ending. LR represents a ray with one end point L and extends infinitely in one direction.

Problem Solving

Question 5.
How many line segments are represented in this figure?

How many points are represented in this figure?
Answer: There are 4 line segments represented in the above figure. The line between the two endpoints are treated as a line segment.
There are 4 points represented in the above figure. A point is an exact location that is represented by a dot.

Vocabulary Check

Choose the correct word(s) to complete each sentence.
endpoint
line
line segment
point
ray

Question 6.
A ______________ is part of a line between two endpoints.
A Line segment is part of a line between two endpoints.

Question 7.
An exact location represented by a dot is a _______________.
An exact location represented by a dot is a point

Question 8.
A _______________ is a figure that extends in opposite directions without ending.
A Line is a figure that extends in opposite directions without ending.

Question 9.
A ray has one _______________.
A ray has one endpoint

Question 10.
A _______________ extends in one direction without ending.
A Ray extends in one direction without ending.

Test Practice

Question 11.
Which is the correct way to represent the figure?

(A) ray WB
(B) line segment WB
(C) $$\overline{W B}$$
(D) $$\overleftrightarrow{W B}$$
Answer: D ($$\overleftrightarrow{W B}$$)
The line is represented as – WB and a horizontal line with arrow marks above the WB, i.e. $$\overleftrightarrow{W B}$$.

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