Notes Over 9 - 9 Reflections

A _______________is a change of position or size of a figure.

Notes Over 9 - 9 Reflections

A _______________is a line that you can put inside an object to where the part of the object on one side of the line is a reflection on the other side.

Notes Over 9 - 9 Reflections

Draw all the lines of symmetry.1. 2.

3. Graph the image over the y-axis.

Notes Over 9 - 9 Reflections

4. Graph the image over the line y = 2.

Notes Over 9 - 9 Reflections

horizontal

Pg 487 9 – 9 #1 – 9, 10 – 28Draw each figure. Draw all lines of symmetry.

1. rhombus 2. square

Pg 487 9 – 9 #1 – 9, 10 – 28Draw each figure. Draw all lines of symmetry.

3. isosceles triangle

Pg 487 9 – 9 #1 – 9, 10 – 28Graph each point and its image over the given line.

4. R(7, 1); x-axis

R

R’

Pg 487 9 – 9 #1 – 9, 10 – 28Graph each point and its image over the given line.

5. S(5, - 1); y-axis

SS’

Notes Over 9 - 10 Rotations

A _______________is a change of position or size of a figure.

1. Find the vertices of the image of RST after a rotation of 90o about the origin.

Notes Over 9 - 10 Rotations

RR’

S TS’

T’

Judging from appearance, tell whether the figure has rotational symmetry. If so, what is the angle of rotation.

Notes Over 9 - 10 Rotations

2.

3.

Judging from appearance, tell whether the figure has rotational symmetry. If so, what is the angle of rotation.

Notes Over 9 - 10 Rotations

4.

Pg 492 9 – 10 #1 – 11, 12 – 28Each figure below is an image formed by rotating the figure at the right. What is each angle of rotation?

1.

2.

3.

Pg 492 9 – 10 #1 – 11, 12 – 28Graph each point. Then rotate it the given number of degrees about the origin. What are the coordinates of the image?

AA’4. A(5, 5); 90o

A’(- 5, 5)

Pg 492 9 – 10 #1 – 11, 12 – 28Graph each point. Then rotate it the given number of degrees about the origin. What are the coordinates of the image?

B

B’

5. B(0, - 2); 180o

B’(0, 2)

Pg 492 9 – 10 #1 – 11, 12 – 28Graph each point. Then rotate it the given number of degrees about the origin. What are the coordinates of the image?

C

C’

6. C(2, 4); 180o

C’(- 2, - 4)

Pg 492 9 – 10 #1 – 11, 12 – 28Graph each point. Then rotate it the given number of degrees about the origin. What are the coordinates of the image?

D

D’

7. D(- 1, - 3); 90o

C’(3, - 1)

Pg 492 9 – 10 #1 – 11, 12 – 28Judging from appearance, tell whether each figure has rotational symmetry. If so, what is the angle of rotation?

4360

8. 9.

6360

Pg 492 9 – 10 #1 – 11, 12 – 28Judging from appearance, tell whether each figure has rotational symmetry. If so, what is the angle of rotation?

10. 11.

6360

Pg 492 9 – 10 #1 – 11, 12 – 28