Modified Circle Unit Test

Front

What is the equation of a circle in standard form?

Back

The equation of a circle in standard form is (x - h)² + (y - k)² = r², where (h, k) is the center and r is the radius.

Front

How do you find the center and radius of a circle from its equation?

Back

For the equation (x - h)² + (y - k)² = r², the center is (h, k) and the radius is r.

Front

Solve for x: 2x + 3 = 13

Back

x = 5

Front

What is the measure of a right angle?

Back

A right angle measures 90 degrees.

Front

Find the measure of y if y + 30 = 90.

Back

y = 60.

Front

What is the sum of angles in a triangle?

Back

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

Front

If angle A = 45 degrees, what is the measure of angle B if angle A and angle B are complementary?

Back

Angle B = 45 degrees.

Front

What is the formula for the circumference of a circle?

Back

The circumference C of a circle is given by C = 2πr, where r is the radius.

Front

What is the area of a circle?

Back

The area A of a circle is given by A = πr², where r is the radius.

Front

Solve for x: 3x - 4 = 11

Back

x = 5.