Equation of a Circle — Unit test Answers

Line segments XY and ZY are tangent to circle O.

Which statements about circle O are true? Select three options.

Angle D is a circumscribed angle of circle O.

Circle D is shown with the measures of the minor arcs.

What is the radius of a circle whose equation is (x + 5)2 + (y – 3)2 = 42?

Circle T is shown. Angle Q S R intercepts arc Q R. Angle Q S R is 52 degrees.

A point is on a circle if the distance from the center of the circle to the point is equal to the

Circle D is shown. Angle A C B intercepts arc A B. Arc A B has a measure of 76 degrees.

Segments RT and SU are diameters of circle O.

A Ferris wheel has a diameter of 42 feet. It rotates 3 times per minute. Approximately how far will a passenger travel during a 5-minute ride?

Consider circle Y with radius 3 m and central angle XYZ measuring 70°.

Circle L is shown. Line segments K L and M L are radii. The length of K L is 12. Angle M L K is 60 degrees. Sector M L K with a 60 degree angle is shaded.

In circle O, and are diameters. The measure of arc AB is 55° and the measure of arc CD is 25°.

Circle B is shown. Line segments A B and C B are radii. The length of A B is 6. Sector A B C is shaded.

In circle D, ∠EDH ≅ ∠EDG.

AD and MN are chords that intersect at point B.

Circle A is shown. Secant W Y intersects tangent Z Y at point Y outside of the circle. Secant W Y intersects circle A at point X. Arc X Z is 105 degrees and arc W Z is 175 degrees.

Circle C is shown. Secants U W and Y W intersect at point W outside of the circle. Secant U W intersect the circle at point V and secant Y W intersects the circle at point X.

In circle P, diameter QS measures 20 centimeters.

Line segment KL is tangent to circle J at point K.