Circles Review

Front

What is the diameter of a circle?

Back

The diameter is the distance across the circle through its center, and it is two times the radius.

Tags

CCSS.HSG.C.A.2

Front

What is a secant line?

Back

A secant line is a line that intersects a circle at exactly two points.

Front

What is the center of a circle in the equation (x+2)²+(y-3)²=4?

Back

The center of the circle is at the point (-2, 3).

Tags

CCSS.HSG.GPE.A.1

Front

How many degrees are in a full circle?

Back

There are 360 degrees in a full circle.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

What is the arc length of arc XY if it is 2π?

Back

The arc length of arc XY is 2π.

Tags

CCSS.HSG.C.B.5

Front

What is the radius of a circle?

Back

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

Front

What is a tangent line?

Back

A tangent line is a line that touches a circle at exactly one point.

Front

What is a chord in a circle?

Back

A chord is a line segment whose endpoints lie on the circle.

Front

What is the formula for the circumference of a circle?

Back

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

Tags

CCSS.7.G.B.4

Front

What is the area of a circle?

Back

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

Tags

CCSS.7.G.B.4