IM Unit 2 Review

Front

What are the coordinates of the image of point C after a dilation with a scale factor of 1/2 and center point P?

Back

(-6, 1)

Front

If two shapes are similar, what can you say about their corresponding angles?

Back

They are congruent.

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities in which the ratio of one quantity to the other quantity remains constant.

Front

What does it mean when triangle A'B'C' is a reduction of triangle ABC with a scale factor of 3/4?

Back

Triangle A'B'C' is smaller than triangle ABC.

Front

How do you find the slope of a line?

Back

The slope of a line is found by taking the difference in the y-coordinates divided by the difference in the x-coordinates of two points on the line.

Front

What is the scale factor in a dilation?

Back

The scale factor is the ratio of the length of a side of the image to the length of the corresponding side of the original figure.

Front

What is the relationship between similar triangles?

Back

Similar triangles have proportional corresponding sides and congruent corresponding angles.

Front

How do you determine if two ratios are proportional?

Back

Two ratios are proportional if their cross products are equal.

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

What happens to the dimensions of a shape when it is dilated by a scale factor greater than 1?

Back

The dimensions of the shape increase.