All the solutions provided inÂ **McGraw Hill My Math Grade 4 Answer Key PDF Chapter 14 Lesson 10 Draw Lines of Symmetry **will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 4 Answer Key Chapter 14 Lesson 10 Draw Lines of Symmetry

### McGraw Hill My Math Grade 4 Chapter 14 Lesson 10 My Homework Answer Key

**Practice**

**Determine whether each figure has line symmetry. Write yes or no. Draw the line(s) of symmetry on the figures that have line symmetry.**

Question 1.

Answer: Yes

If a figure can be folded over a line so that one half of the figure matches the other half, it has line symmetry. The fold line indicating that a figureâ€™s two halves match exactly is called Line of symmetry.

Here, in the above figure, we have 3 lines of symmetry as the given figure is an equilateral triangle. The line of symmetry is indicated using a black line in the figure.

Question 2.

Answer: Yes

If a figure can be folded over a line so that one half of the figure matches the other half, it has line symmetry. The fold line indicating that a figureâ€™s two halves match exactly is called Line of symmetry.

Here, in the above figure, we have 1 line of symmetry. The line of symmetry is indicated using a black line in the figure.

Question 3.

Answer: Yes

If a figure can be folded over a line so that one half of the figure matches the other half, it has line symmetry. The fold line indicating that a figureâ€™s two halves match exactly is called Line of symmetry.

Here, in the above figure, we have 2 lines of symmetry. The line of symmetry is indicated using a black line in the figure.

Question 4.

Answer: No

If we fold the figure, the left and right side of the folded line is not symmetrical to each other, which implies this as an example of an asymmetrical figure.

**Determine whether the dotted line is a line of symmetry for each figure. Write yes or no.**

Question 5.

Answer: No

The dotted line here is not the line of symmetry. If you fold the figure along the dotted line as shown above, i.e. you fold a rectangle through its diagonal, the two halves of the folder part will not be in symmetry to each other.

Question 6.

Answer: Yes

The dotted line here indicated the line of symmetry. If you fold the figure along the dotted line as shown above, the two halves of the folded part are symmetrical to each other.

**Draw the other half of each symmetrical shape.**

Question 7.

Answer:

The dotted line here indicated the line of symmetry. If you fold the figure along the dotted line as shown above, the two halves of the folded part are symmetrical to each other.

Question 8.

Answer:

The dotted line here indicated the line of symmetry. If you fold the figure along the dotted line as shown above, the two halves of the folded part are symmetrical to each other.

**Problem Solving**

Question 9.

**Mathematical PRACTICE** Model Math Vince wrote his name in all capital letters. How many of the letters have line symmetry? List them.

Answer: If a object can be folded over a line so that one half of the object matches the other half, it has line symmetry. Out of 26 alphabets, 15 alphabets have line symmetry. They are mentioned below.

The alphabets A,B,C,D,E,H,I,M,O,T,U,V,W,X and Y have line symmetry.

**Vocabulary Check**

Choose the correct word(s) to complete each sentence.

line of symmetry

line symmetry

Question 10.

If a figure can be folded into identical halves, it has ______________.

Answer: line symmetry

If a figure can be folded into identical halves, it has line symmetry.

In other words, If a figure can be folded over a line so that one half of the figure matches the other half, it has line symmetry.

Question 11.

The fold is the ______________.

Answer: line of symmetry

The fold is the line of symmetry.

In other words, The fold line indicating that a figureâ€™s two halves match exactly is called Line of symmetry.

**Test Practice**

Question 12.

How many lines of symmetry does the sign have?

(A) 3

(B) 1

(C) 2

(D) 0

Answer: B (1)

The above sign have one line of symmetry. If you fold the sign exactly half vertically, the two halves of the folded parts are in symmetry.