Semester Exam 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. Their corresponding angles are equal, and the lengths of their corresponding sides are proportional.

Front

How do you calculate the circumference of a circle?

Back

The circumference (C) of a circle can be calculated using the formula: C = π × d, where d is the diameter of the circle.

Front

What is the formula for the area of a circle?

Back

The area (A) of a circle is given by the formula: A = π × r², where r is the radius of the circle.

Front

What is the value of the expression -9 * 2.2?

Back

The value of the expression -9 * 2.2 is -19.8.

Front

How do you solve the equation 2x + 10 = 28?

Back

To solve for x, subtract 10 from both sides to get 2x = 18, then divide both sides by 2 to find x = 9.

Front

What is the diameter of a circle?

Back

The diameter of a circle is the distance across the circle through its center, equal to twice the radius.

Front

What is the relationship between diameter and radius?

Back

The diameter (d) of a circle is twice the radius (r): d = 2r.

Front

What is a proportion in mathematics?

Back

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

Front

How do you find the value of x in similar figures?

Back

To find the value of x in similar figures, set up a proportion using the lengths of corresponding sides and solve for x.

Front

What is the formula for finding the area of a rectangle?

Back

The area (A) of a rectangle is calculated using the formula: A = length × width.