217 9-6 & 9-7 Review

Enlargement or reduction?  Find the scale factor!

• It's a reduction; the scale factor is 2.
• It's an enlargement; the scale factor is 2.
• It's an enlargement; the scale factor is 1/2.
• It's a reduction; the scale factor is 1/2.

Tags

CCSS.8.G.A.3

Triangle ABC will be dilated by a scale factor of 1/2.  What will be the coordinates of C'?

• (-1, -2.5)
• (12, 6)
• (3, -1.5)
• (0, 1.5)

Tags

CCSS.8.G.A.3

Enlargement or reduction?  Find the scale factor!

• It's an enlargement; the scale factor is 1/2.
• It's an enlargement; the scale factor is 2.
• It's a reduction; the scale factor is 1/2.
• It's a reduction; the scale factor is 2.

Tags

CCSS.7.G.A.1

Triangle ABC has vertices A (-2, 2), B (2, 4) and C (3, -1).  What are the coordinates of A' after a dilation by a scale factor of 2.5?

• (-5, 5)
• (5, -5)
• (5, 10)
• (7.5, -2.5)

Tags

CCSS.8.G.A.3

Quadrilateral RSTV is dilated so that the coordinates of S' are (3, 9).  What was the scale factor of the dilation?

• 0.6
• (1, 3)
• 3/2
• 3

Tags

CCSS.8.G.A.3

Triangle ABC is dilated so that the coordinates of C' are (2, -1).  What was the scale factor of the dilation?

• 3
• 2
• 1/2
• 1/3

Tags

CCSS.8.G.A.3

Polygon ABCDE will be dilated by a scale factor of 2.  Which statement is NOT true of the dilation?

• The corresponding angles of the two polygons will be equal.
• The dilation will be an enlargement.
• The original and the image will be congruent.
• Polygon A'B'C'D'E' will be proportional to polygon ABCDE. 

Tags

CCSS.8.G.A.3

Dilation rules use ______________ to change the ___________ of a shape. 

• addition; location
• division; direction
• subtraction; orientation
• multiplication; size

Tags

CCSS.8.G.A.3

Which transformation is not a rigid transformation?

• Translation
• Reflection
• Rotation
• Dilation

Tags

CCSS.HSG.CO.B.6

You look at an ant under a magnifying glass. The image of the ant is 6 times the ant's actual size and has a length of 4.8 cm. Find the actual length of the ant.

• 0.8 cm

• 28.8 cm

• 1.25 cm