Polygons and Dilations

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

• addition; location

• division; direction

• subtraction; orientation

• multiplication; size

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What is the scale factor from ABCD to MNOP?

• 2/3

• 3/2

• 2

• 3

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How is trapezoid ABCD translated to trapezoid A'B'C'D'?

• Translated 5 units down and 5 units to the right

• Translated 5 units down and 1 to the right

• Translated 8 units down and 5 units to the right

• Translated 5 units down and 4 units to the right

If the trapezoid is translated by the rule (x, y − 7), what is the new ordered pair for point T?

• (-5, 2)

• (-2, 2)

• (-2, -5)

• (-9, 2)

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

• (x, y) --> (1/3x, 1/3y)

• (x, y) --> (-3x, -3y)

• (x, y) --> (x + 3, y + 3)

• (x, y) --> (3x, 3y)

Which algebraic expression could be the rule for a reduction?

• (x, y)→(2x, 2y)

• (x, y)→(5/2 x, 5/2 y)

• (x, y) →(0.5x, 0.5y)

• (x, y)→(5x, 5y)

How would you translate point P to P'?

• Translate 2 units to the right and  8 units down

• Translate 3 units down and 2 units to the right

• Translate 4 units down and 4 units to the left

• Translate 8 units to the right and 2 units down