Unit 10: Circles and Area Vocabulary

What is a Circle?

• A segment with endpoints on the circle

• A set of all points equidistant from a center

• A line passing through the center

What is a Chord?

• A segment with endpoints on the circle

• A chord passing through the center

• A set of all points equidistant from a center

What is Circumference?

• Distance around the circle

• A segment with endpoints on the circle

• A set of all points equidistant from a center

Tags

CCSS.HSG.C.A.2

What is the formula for the Area of a Circle?

• A = πr²

• A = 2πr

• A = πd

• A = r²/2

Tags

CCSS.7.G.B.4

What is the formula for the Area of a Rectangle?

• A = bh

• A = 2(l + w)

• A = πr²

• A = ½bh

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What is the formula for the Area of a Parallelogram?

• A = bh

• A = 1/2 bh

• A = l * w

• A = πr²

Tags

CCSS.6.G.A.1

What is an Altitude?

• A segment with endpoints on the circle

• A line segment perpendicular to the base

• A set of all points equidistant from a center

The term for the set of all points that are the same distance from a given point, called the center of the circle, is ___________.

• circle

• ellipse

• parabola

• hyperbola

A segment that has one endpoint at the center and the other on the circle is called the ___________.

• tangent

• diameter

• chord

• radius

4. A segment whose endpoints are on the circle is called the ___________.

• chord

• radius

• diameter

• tangent