Circles 4 - SG

Front

A tangent is a line that _______.

Back

intersects the circle at one point.

Front

What is the value of x if the angle measures 80°?

Back

x = 80.

Front

Find the measure of major arc PQ if it is 360° - minor arc PQ.

Back

260°.

Front

Determine y if the angle measures 60°.

Back

y = 60.

Front

A tangent line intersecting with a radius always creates a ____________ angle.

Back

right.

Front

What is the definition of a circle?

Back

A circle is a set of points in a plane that are equidistant from a given point called the center.

Front

What is the formula for the circumference of a circle?

Back

C = 2πr, where r is the radius.

Front

What is the relationship between the radius and diameter of a circle?

Back

The diameter is twice the length of the radius (d = 2r).

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 measure of a semicircle?

Back

180°.