Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry

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Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry

Essential Question

How can you check if a figure has line symmetry?
Answer:

Unlock the Problem

$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 1$

One type of symmetry found in geometric figures is line symmetry. This sign is in the hills above Hollywood, California. D0 the letters in the Hollywood sign show line symmetry?

A figure has line symmetry fit can he folded about a line so that its two parts match exactly.
A fold line, or a line of symmetry, divides a figure into two parts that are the same size and shape.

Activity Explore line symmetry.

Materials

pattern blocks
scissors
tracing paper

Math Idea

$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 2$

(A) Does the letter W have line symmetry?

STEP 1 Use pattern blocks to make the letter W.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 3$
Answer:

STEP 2 Trace the letter
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 4$
Answer:

STEP 3 Cut out the tracing.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 5$
Answer:

STEP 4 Fold the tracing over a vertical line.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 6$
Answer:

So, the letter W ____________ line symmetry.
Answer:
one line of symmetry

Explanation:
As we fold the paper the two parts of the folded W match exactly. Hence fold line is a line of symmetry. Therefore W has one line of symmetry.

Math Talk

Mathematical Processes
Why is it important to use a fold line to check if a figure has line symmetry?
Answer:
A line that cuts a shape exactly in half. That means if you were to fold the shape along the line, both the halves would match exactly. Then we can tell that the fold line is a line of symmetry.

(B) Does the letter L have line symmetry?

STEP 1
Use pattern blocks or grid paper to make the letter L.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 7$
Answer:

STEP 2
Trace the letter.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 8$
Answer:

STEP 3
Cut out the tracing.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 9$
Answer:

STEP 4
Fold the tracing over a vertical line.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 10$
Answer:

STEP 5
Then open it and fold it horizontally.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Find and Draw Lines of Symmetry 62$
Answer:

STEP 6
Then open it and fold it diagonally.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 12$
Answer:

So, the letter L _____________ line symmetry.
Answer:
The letter L has no line of symmetry.

Explanation:
The given letter L has no line of symmetry though it was folded horizontally or vertically.

Math Talk

Mathematical Processes
Explain how you can use paper folding to check if a figure has line symmetry.
Answer:
To check the line of symmetry, we have to fold the paper through the line. If the shapes on both sides of the line get matched, then the line through which the paper is folded can be considered as a line of symmetry.

Share and Show

Tell whether the parts on each side of the line match.
Is the line a line of symmetry? Write yes or no.

Question 1.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 13$
Answer:
Yes

Explanation:
We can imagine the above shape given as a paper. If we fold the paper through the dotted line, transparently the shapes on both sides of the line get matched. Hence the dotted line is a line of symmetry.

Question 2.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 14$
Answer:
Yes

Explanation:
We can imagine the above shape given as a paper. If we fold the paper through the dotted line, transparently the shapes on both sides of the line get matched. So, the dotted line is a line of symmetry.

Question 3.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 15$
Answer:
Yes

Explanation:
The given figure has a line of symmetry.

Question 4.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 16$
Answer:
No

Explanation:
We can imagine the above shape given as a paper. If we fold the paper through the dotted line, transparently the shapes on both sides of the line do not get matched. So, the given figure has no line of symmetry.

Problem Solving:

Complete the design by reflecting over the line of symmetry.

Question 5.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 17$
Answer:
$Texas-Go-Math-Grade-4-Lesson-13.5-Answer-Key-Line-Symmetry-17$

Question 6.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 18$
Answer:
$Texas-Go-Math-Grade-4-Lesson-13.5-Answer-Key-Line-Symmetry-18$

Question 7.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 19$
Answer:
$Texas-Go-Math-Grade-4-Lesson-13.5-Answer-Key-Line-Symmetry-19$

Question 8.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 20$
Answer:
$Texas-Go-Math-Grade-4-Lesson-13.5-Answer-Key-Line-Symmetry-20$

Unlock the Problem

Question 9.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 21$
H.O.T. Multi-Step Which figure has a correctly drawn line of symmetry?
(A)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 22$
(B)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 23$
(C)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 24$
(D)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 25$
Answer:

a. What do you need to find?
Answer:
To check whether the figure has a correctly drawn line of symmetry

b. How can you tell if the line of symmetry is correct?
Answer:
If the shapes on both sides of the line get matched, then the line through which the figure has folded can be considered as a line of symmetry.

c. Tell how you solved the problem.
Answer:

d. Fill in the bubble for the correct answer choice above.
Answer:
Option B

Daily Assessment Task

Fill in the bubble completely to show your answer.

Question 10.
Use Diagrams In which figure does the blue line appear not to be a line of symmetry?
(A)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 26$
(B)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 27$
(C)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 28$
(D)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 29$
Answer:
Option B

Explanation:

Question 11.
Casey is using foam stickers in different shapes to make a design.In which figure does the blue line appear to he a line of symmetry?
(A)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 30$
(B)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 31$
(C)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 32$
(D)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 33$
Answer:
Option B

Explanation:
The figure given in option B has one line of symmetry.

Question 12.
Riley is making a pattern using trapezoids. In which trapezoid does the blue line appear to be a line of symmetry?
(A)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 34$
(B)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 35$
(C)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 36$
(D)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 37$
Answer:
Option B

TEXAS Test Prep

Question 13.
Which best describes the line of symmetry in the letter M?
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 38$
(A) horizontal
(B) diagonal
(C) vertical
(D) rotational
Answer:
Vertical

Texas Go Math Grade 4 Lesson 13.5 Homework and Practice Answer Key

Tell whether the parts on each side of the line match.
Is the line a line of symmetry? Write yes or no.

Question 1.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 39$
Answer:
Yes

Question 2.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 40$
Answer:
Yes

Question 3.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 41$
Answer:
No

Question 4.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 42$
Answer:
Yes

Problem Solving

Complete the design by reflecting over the line of symmetry.

Question 5.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 43$
Answer:

Question 6.
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 44$
Answer:

Lesson Check

Fill In the bubble completely to show your answer.

Question 7.
In which figure does the blue line appear to be a line of symmetry?
(A)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 45$
(B)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 46$
(C)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 47$
(D)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 48$
Answer:
Option C

Explanation:
The figure from option C has a line of symmetry.

Question 8.
Which of the letters has line symmetry?
(A)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 49$
(B)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 50$
(C)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 51$
(D)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 52$
Answer:
Option A

Explanation:
The letter C from Option A has line symmetry.

Question 9.
Nora is making a pattern using a star shape. In which star does the blue line appear to be a line of symmetry?
(A)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 53$
(B)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 54$
(C)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 55$
(D)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 56$
Answer:
Option B

Explanation:
The star does the blue line appear to be a line of symmetry is Option B.

Question 10.
Multi-Step Which best describes the symmetry in the letter I?
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 57$
(A) vertical only
(B) horizontal only
(C) vertical and horizontal
(D) diagonal and vertical
Answer:
Horizontal only.

Explanation:
The letter I have horizontal symmetry only.

Question 11.
Multi-Step Which group of letters has no line of symmetry?
(A)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 58$
(B)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 59$
(C)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 60$
(D)
$Texas Go Math Grade 4 Lesson 13.5 Answer Key Line Symmetry 61$
Answer:
Option B