Flashcardizz #2 (Test Review)

Front

Name the tangent line.

Back

s

Front

In the equation (x-3)²+(y-2)²= 16, what is the center of the circle?

Back

(3,2)

Front

In the equation (x+2)²+(y-3)²= 4, what is the radius of the circle?

Back

2

Front

A tangent to a circle is ________________________ to the radius drawn to the point of tangency.

Back

perpendicular

Front

What is the measure of arc ZY?

Back

51

Front

What is the standard form of a circle's equation?

Back

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

Front

What does the term 'radius' refer to in a circle?

Back

The distance from the center of the circle to any point on its circumference.

Front

What is the relationship between the diameter and radius of a circle?

Back

The diameter is twice the length of the radius.

Front

How do you find the circumference of a circle?

Back

C = 2πr, where r is the radius.

Front

What is the area of a circle formula?

Back

A = πr², where r is the radius.