Math 2 - HW Check 9.6 Dilations

A dilation produces a similar figure

• True
• False

Tags

CCSS.8.G.A.3

A dilation always produces a similar figure. Similar figures have the same ​ (a)   but different ​ (b)   ​.

• shapes
• size
• measures
• values

Which transformations are considered isometries? (click all that apply)

• Translation

• Refelction

• Rotation

• Dilation

Match the type of dilation to its rule.

• scale factor is >1

• Reduction

• scale factor is <1

• Enlargement

• scale factor =1

• No Change

Match the scale factor to its rule for a dilation.

• (x, y) → (0.3x, 0.3y)

• (x, y) → (3x, 3y)

• (x, y) → (x, y)

How do you write the algebraic notation when the scale factor is 3?

How do you write the algebraic notation when the scale factor is 1/2? 

A triangle has vertices with coordinates (2,0), (3, -1) and (-2,-5). If the triangle is dilated by a scale factor of 3 with the origin as the center of dilation, what are the coordinates of the vertices of the image?

• (5,3), (6,2), (1,-2)
• (6,0), (9,-3), (-6,-15)
• (2/3,0), (1,-1/3), (-2/3,-5/3)
• (-1,-3), (0,-4), (-5,-8)

Tags

CCSS.8.G.A.3

Kai is playing a video game where he controls a character named B. The character is currently at a position (-10,-6) on the game map. If Kai uses a power-up that scales the character's position by a factor of 1/2 with respect to the origin, what will be the new coordinates of character B?

• (5,3)

• (20,12)

• (-20,-12)

• (-5,-3)

Dilate Point B by a scale factor of 1/2

• (1.5,-4)
• (-1.5,1)
• (-1,-1.5)
• (-2,-2)

Tags

CCSS.8.G.A.3