Review Transformations

Quadrilateral A, B, C, D is transformed according to the rule (x,y)-- (x - 2, y +4) to create quadrilateral A'B'C'D'

Which statement is true?

• The angle measures of A'B'C'D' are greater than the angle measures of ABCD

• The angle measures of A'B'C'D' are congruent to the angle measures of ABCD

• The side lengths of A'B'C'D' are 4 units less than ABCD

• The side lengths of A'B'C'D' are twice the size of ABCD

If we triple the radius, by what factor will the area increase?

• 1/3

• 3

• 9

• 27

If we change the dimensions by a scale factor of 1/2, by what factor will the perimeter increase?

• 1/8

• 2

• 1/2

• 1/4

Translate 8 units right and 3 unit up

• (x,y)→(x+8, y-3)

• (x,y)→(x-3, y+8)

• (x,y)→(x-8, y+3)

• (x,y)→(x+8, y+3)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Which algebraic expression represents this dilation?

• (x, y)---(2x, 2y)

• (x, y)---(1/2x, 1/2y)

• (x, y) --- (x +2, y -1)

• (x, y) --- (-x, y)

Shape ABCD is rotated 90 degrees counter clockwise about the origin to create shape A'B'C'D'. Which rule describes this transformation?

• (x, y) --- (y, -x)

• (x, y) --- (-y, x)

• (x, y) --- (-x, -y)

• (x ,y) --- (-x, y)

Triangle GHI is reflected across the x-axis. Which rule best describes the transformation

• (x,y ) --- (-y, x)

• (x, y) ---(-x, y)

• (x, y) --- (-x, -y )

• (x, y) --- (x, -y)

Which representation of a transformation on a coordinate grid does not preserve congruence?

• (x, y)→(1/7x, 1/7y)

• (x, y)→(x + 7, y + 7)

• (x, y)→(x, -y)

• (x, y)→(y, -x)

Tags

CCSS.HSG.CO.A.2

Apply the rule

(y, -x) to point (2, -3)

• (-3, -2)

• (2, 3)

• (3, 2)

• (-2, -3)

A rectangle is graphed on a coordinate plane with (x,y) representing the location of a certain point on the rectangle. The rectangle is transformed using the rule

(x,y)---(ux, uy) Which statement is true?

• if u is greater than 1, the new image will be congruent

• if u is less than 1, the new image will be congruent

• if u is greater than 1, the new image will be smaller

• if u is between 0 and 1, the new image will be smaller