Friday (3/19/21) (8.3 A, B, C 8.10 A, B, C, D 8.6 C 8.7 C,D)

Front

ST/EF = WR/CD

Back

Correct Answer: ST/EF = WR/CD

Front

Pentagon M'N'P'Q'R' is smaller than MNPQR.

Back

Scale factor is less than 1.

Front

A polygon is dilated on a grid using the origin as the center. What rule represents this dilation?

Back

(x, y) → (0.9x, 0.9y)

Front

A polygon is transformed by (x, y) → (ax, ay). What must be true?

Back

If a is between 0 and 1, the image of the polygon is smaller than the polygon.

Front

(x, y) → (\frac{7}{4}x, \frac{7}{4}y)

Back

Correct Answer: (x, y) → (\frac{7}{4}x, \frac{7}{4}y)

Front

A square with a perimeter of 20 units is dilated by a scale factor of 0.4. What are the coordinates of a point on the resulting square if (x, y) are the coordinates on the original square?

Back

(0.4x, 0.4y)

Front

Triangle MNP has vertices M (-3, -6), N (0, 3), P (6, -3). After dilation by scale factor u, what are the coordinates of vertex P'?

Back

(6u, -3u)

Front

(x, y) → (1.4x, 1.4y)

Back

Correct Answer: (1.4x, 1.4y)

Front

(x, y) → (2x, 2y)

Back

(x, y) → (2x, 2y)

Front

Angle measures of trapezoid PQRS equal those of trapezoid P'Q'R'S'.

Back

The angle measures of trapezoid PQRS are equal to the corresponding angle measures of trapezoid P'Q'R'S'.