Unit 4-6 Final Exam Review

Front

What does it mean for ratios to be proportional?

Back

Ratios are proportional if they can be expressed as equivalent fractions. For example, the ratios 1:2 and 2:4 are proportional because they simplify to the same fraction (1/2).

Front

Are the ratios 10/12 and 20/32 proportional?

Back

No, they are not proportional because 10/12 simplifies to 5/6, while 20/32 simplifies to 5/8.

Front

What is the measure of a right angle?

Back

A right angle measures 90 degrees.

Front

What is the sum of angles in a triangle?

Back

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

Front

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

Back

Subtract the sum of the known angles from 180 degrees.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you solve for a missing side using proportions?

Back

Set up a proportion using the known sides and cross-multiply to solve for the unknown side.

Front

What does it mean for triangles to be similar?

Back

Triangles are similar if their corresponding angles are equal and their sides are in proportion.

Front

How can you determine if two triangles are similar?

Back

You can use the Angle-Angle (AA) criterion, where if two angles of one triangle are equal to two angles of another triangle, the triangles are similar.

Front

What is the rotation of a figure?

Back

The rotation of a figure refers to turning the figure around a fixed point, measured in degrees.