Quiz 9-2 Review: Rotations, Dilations, and Sequences

Which is the rule for 90° counterclockwise rotation?

• (x,y) → (-y,x)

• (x,y) → (-x,-y)

• (x,y) → (y,-x)

Which is the rule for 270° counterclockwise rotation?

• (x,y) → (-y,x)

• (x,y) → (-x,-y)

• (x,y) → (y,-x)

Which is the rule for 180° rotation?

• (x,y) → (-y,x)

• (x,y) → (-x,-y)

• (x,y) → (y,-x)

Rhombus ABCD with vertices A(2,6), B(6,7), C(5,3), and D(1,2).

Apply an 180° rotation.

Find A' .

• (-6,-7)

• (-2,-6)

• (-1,-2)

• (-5,-3)

Rhombus ABCD with vertices A(2,6), B(6,7), C(5,3), and D(1,2).

Apply an 180° rotation.

Find B' .

• (-6,-7)

• (-2,-6)

• (-1,-2)

• (-5,-3)

Rhombus ABCD with vertices A(2,6), B(6,7), C(5,3), and D(1,2).

Apply an 180° rotation.

Find C' .

• (-6,-7)

• (-2,-6)

• (-1,-2)

• (-5,-3)

Trapezoid STUV with vertices S(-7,-1), T(-2,-3), U(-2,-5), and V(-7,-7).

Apply an 90° counterclockwise rotation.

Find S' .

• (7,-7)

• (5,-2)

• (3,-2)

• (1,-7)

Trapezoid STUV with vertices S(-7,-1), T(-2,-3), U(-2,-5), and V(-7,-7).

Apply an 90° counterclockwise rotation.

Find T' .

• (7,-7)

• (5,-2)

• (3,-2)

• (1,-7)

Trapezoid STUV with vertices S(-7,-1), T(-2,-3), U(-2,-5), and V(-7,-7).

Apply an 90° counterclockwise rotation.

Find U' .

• (7,-7)

• (5,-2)

• (3,-2)

• (1,-7)

Triangle FGH with vertices F(-7,8), G(-1,1), and H(-8,4).

Apply an 270° counterclockwise rotation.

Find F' .

• (1,1)

• (8,7)

• (4,8)