Test Unit 10 Retake

Front

What is the equation of a circle with center at (h, k) and radius r?

Back

(x - h)² + (y - k)² = r²

Front

What is the diameter of a circle?

Back

The diameter is twice the radius of the circle.

Front

How do you find the center of a circle given its equation?

Back

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

Front

What is the relationship between degrees and radians?

Back

180 degrees = π radians.

Front

How do you solve for an unknown angle in a triangle?

Back

Use the fact that the sum of angles in a triangle is 180 degrees.

Front

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

Back

Area = πr², where r is the radius.

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2πr, where r is the radius.

Front

How do you find the value of x in a linear equation?

Back

Isolate x on one side of the equation.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

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

Back

The sum is always 180 degrees.