Rotation

Triangle A is rotated 270° with the origin as the center of rotation to create a new figure. Which triangle shows the new location?

• A

• B

• C

• D

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Rotate the point (-3,-4) around the origin 180 degrees. State the image of the point.

Rule: (x, y) ----> ( -x, -y)

• (-4, -3)

• (-4, 3)

• (4, -3)

• (3, 4)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Point A (-3, 5) is rotated 270° about the origin. What the coordinates of its image?

Rule: (x, y) -----> (y, -x)

• (5, 3)

• (-5, -3)

• (3, -5)

• (-5, 3)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the missing point? Look back at your coordinate rules.

• (8,-5)

• (-8,5)

• (5,8)

• (-5,-8)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

In a rotation, every point and its image are...

• the same distance from the center of rotation

• the same angle from the center of rotation

• perpendicular to the center of rotation

• parallel

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

True or false: with rotation, orientation is always maintained

• True

• False

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the missing point?

(a)  

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the missing point?

(a)  

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Which of the following describes how to find the angle of rotation?

• Draw a line segment from the point of rotation to the pre-image, Draw a line segment from the point of rotation to the image, Use a protractor to find the angle on rotation

• Find two perpendicular bisectors, where these lines meet is the angle of rotation

• Use the midpoint formula and the slope of the perpendicular bisector

• Turn your paper according to the notation, count how far a point is from the point of rotation, turn your paper back "home", plot the point

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the missing point

• (10,-6)

• (10,-6)

• (6,10)

• (-6,-10)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5