Geometry Fall Semester Review

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What is the definition of a line of symmetry?

Back

A line that divides a shape into two identical parts that are mirror images of each other.

Front

What is the scale factor in geometry?

Back

A number that scales, or multiplies, some quantity.

Front

What does it mean for a figure to be enlarged?

Back

The figure is made larger by a scale factor greater than one.

Front

What does it mean for a figure to be reduced?

Back

The figure is made smaller by a scale factor less than one.

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height.

Front

What is a transversal in geometry?

Back

A line that intersects two or more lines at different points.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are always equal.