Geometry 7 - 6 Arcs and Angles in Circles

Geometry Section 7 - 6 Arcs and Angles

One Day

Multiple Choice

What is the area of a circle with a radius of 6?

• $$6\pi$$

• $$12\pi$$

• $$36$$

• $$36\pi$$

• $$24\pi$$

Multiple Choice

What is the circumference of a circle with a radius of 6?

• $$6\pi$$

• $$12\pi$$

• $$36$$

• $$36\pi$$

• $$24\pi$$

Multiple Choice

What if you were looking for the area of half of the circle with a radius of 6?

• $$6\pi$$

• $$12\pi$$

• $$18\pi$$

• $$36\pi$$

• $$24\pi$$

Multiple Choice

What if you were looking for 90 degrees of the circle? What part of the whole circle would that be?

• $$\frac{1}{2}$$

• $$\frac{1}{3}$$

• $$\frac{1}{4}$$

• $$\frac{1}{6}$$

Central Angle -
Minor Arc -
Major Arc -
Semicircle-

Multiple Choice

Name the minor arc.

• $$\angle AOB$$

• arc $$AB$$

• arc $$ACB$$

• arc $$OA$$

Multiple Choice

Name the central angle.

• $$\angle AOB$$

• arc $$AB$$

• arc $$ACB$$

• arc $$OA$$

Fill in the Blanks

Fill in the Blanks

Fill in the Blanks

Fill in the Blanks

Multiple Choice

What is the area of a circle with a diameter of 16 ?

• $$8\pi$$

• $$16\pi$$

• $$32$$

• $$32\pi$$

• $$64\pi$$

Multiple Choice

What is the circumference of a circle with a diameter of 16?

• $$8\pi$$

• $$16\pi$$

• $$32$$

• $$32\pi$$

• $$64\pi$$

Multiple Choice

What if you were looking for 40 degrees of the circle?

What part of the whole circle would that be?

• $$\frac{1}{20}$$

• $$\frac{1}{10}$$

• $$\frac{1}{9}$$

• $$\frac{1}{12}$$

• $$\frac{1}{40}$$  

Multiple Choice

What is the measure of arc ACB?

• $$360\degree$$

• $$180\degree$$

• $$90\degree$$

• There's no way to tell.

Multiple Choice

What is the length of arc ACB?

if AB = 18

• 18

• 9

• $$9\pi$$

• $$18\pi$$

• $$180\degree$$

Multiple Choice

What is the length of arc CB?

If OB = 8, and Angle COB = 45 degrees.

• $$\pi$$

• $$16\pi$$

• $$8\pi$$

• $$2\pi$$

• $$4\pi$$

Multiple Choice

Find the length of arc AB to the nearest tenth

• $$15\pi$$

• $$25\pi$$

• $$50\pi$$

• $$7.5\pi$$

Multiple Choice

In order to call two arcs from different circles congruent it is not enough for the arcs to have equal measure, what other measure must you know to be congruent?

• both radii

• central angle measure

• the measure of other arcs.

• a large quantity of gopher wood

Homework

• Complete problems 1 - 16 on the 7-6 formative practice sheet.