Review for Unit #2 Test

Front

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image? A(3,3) B(6,6) C(9,3)

Back

A'(9,9) B'(18,18) C'(27,9)

Front

Which of the following is NOT true about similar figures? A) Similar figures always have the same shape. B) Similar figures always have the same size. C) Similar figures always have corresponding angles that are equal. D) Similar figures always have corresponding sides that are proportional.

Back

B) Similar figures always have the same size.

Front

Find the slope between the points (-3, 3) and (7, 6).

Back

3/10

Front

Find the slope of the line represented by the equation y = 4x + 1.

Back

4

Front

Triangle ABC is dilated using a scale factor of 1/2. What are the new coordinates of point A' if A is at (-6, 6)?

Back

(-3, 3)

Front

What is the definition of similar figures?

Back

Similar figures have the same shape but not necessarily the same size, with corresponding angles equal and corresponding sides proportional.

Front

What is the formula for calculating the slope between two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1)

Front

If a triangle has vertices at (2, 3), (4, 5), and (6, 3), what are the coordinates after a dilation by a scale factor of 2?

Back

(4, 6), (8, 10), (12, 6)

Front

What does a scale factor of 1/2 mean in dilation?

Back

It means that the image will be half the size of the original figure.

Front

If two triangles are similar, what can we say about their corresponding angles?

Back

Their corresponding angles are equal.