arcs and chords

What is the radius?

• 18
• 72
• 38
• 14

Tags

CCSS.7.G.B.4

What is the diameter?

• 8
• 16
• 10
• 4

Tags

CCSS.7.G.B.4

If 2 segment are tangent to the same circle, the segments are congruent.

• False

• True

Definitions:

A central angle is an angle whose vertex is the center of the circle.

An arc is an unbroken part of the circle consisting of 2 points called endpoints and the points on the circle between them.

Do you need to know these vocabulary words?

• Yes

• No

An arc that joins the endpoints of a diameter is called a

• major arc

• minor arc

• semicircle

• chord

Major arcs are named by 3 letters

• True

• False

Theorems to Understand about chords and circles or congruent circles:

1.Congruent central angles have congruent chords 2. Congruent chords have congruent arcs and 3. Congruent arcs have congruent central angles. Examples on p. 757 in your book. Do you understand?

Which segment is the diameter?

• AC
• BD
• LM
• CE

Tags

CCSS.HSG.C.A.2

In a circle, an arc that is less than a semicircle is a

• minor arc

• major arc

• chord

• diameter

Which segment is a radius?

• LM
• DC
• BD
• ML

Tags

CCSS.HSG.C.A.2