IM 8th Grade Unit 2 Review

Front

What does it mean for two figures to be similar?

Back

Two figures are similar if they have the same shape but not necessarily the same size. This means their corresponding angles are equal and their corresponding sides are in proportion.

Front

What is the criteria for triangles to be similar?

Back

Triangles are similar if they satisfy any of the following criteria: AA (Angle-Angle), SSS (Side-Side-Side), or SAS (Side-Angle-Side).

Front

How do you find the measure of the third angle in a triangle?

Back

To find the measure of the third angle in a triangle, subtract the sum of the measures of the other two angles from 180 degrees.

Front

What is the formula for calculating the slope of a line?

Back

The slope (m) of a line is calculated using the formula m = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are two points on the line.

Front

What is the relationship between the sides of similar triangles?

Back

In similar triangles, the ratios of the lengths of corresponding sides are equal.

Front

What is the significance of corresponding angles in similar figures?

Back

Corresponding angles in similar figures are equal, which helps establish the similarity of the figures.

Front

How can you determine if two triangles are similar using the AA criterion?

Back

If two angles of one triangle are equal to two angles of another triangle, then the triangles are similar by the AA criterion.

Front

What is the relationship between the slopes of parallel lines?

Back

The slopes of parallel lines are equal.

Front

How do you solve for a missing side in similar triangles?

Back

To solve for a missing side in similar triangles, set up a proportion using the lengths of the corresponding sides and solve for the unknown.

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180 degrees.