9-1 Arcs and Central Angles (Flashcardizz)

Front

Circles with the same center, but different radii are called _____

Back

Concentric Circles

Front

Circles with exactly the same radius measures are _____

Back

Congruent Circles

Front

What is the measure of arc AXB if it is given as 50, 100, 180, or 260?

Back

100

Front

What is the measure of arc AYB if it is given as 50, 100, 180, or 260?

Back

260

Front

What is the measure of arc AB if it is given as 140, 142, 180, or 153?

Back

142

Front

The angle formed at the center of a circle by two radii is called _____

Back

Central Angle

Front

The total measure of angles around a point is _____ degrees.

Back

360 degrees

Front

The relationship between the arc length and the radius of a circle is given by the formula _____

Back

Arc Length = (Central Angle/360) * 2πr

Front

If two arcs have the same measure, they are said to be _____

Back

Congruent Arcs

Front

The measure of a semicircle is _____ degrees.

Back

180 degrees