Unit Test — Unit test Answers

Circle D is inscribed with triangle A B C. The measure of arc A B is 76 degrees. Point E is on the circle between points B and C.

Circle G and X connect at point Y. The length of G Y is 10 centimeters and the length of Y X is 16 centimeters.

Line segment ON is perpendicular to line segment ML.

A circle is shown. Secant A D and tangent E D intersect at point D outside of the circle. Secant A D intersects the circle at point B. The length of A B is a, the length of B D is 10, and the length of D E is 12.

Consider a circle whose equation is x2 + y2 – 2x – 8 = 0. Which statements are true? Select three options. The radius of the circle is 3 units.The center of the circle lies on the x-axis.The center of the circle lies on the y-axis.The standard form of the equation is (x – 1)² + y² = 3.The radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.

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.

Line segments XY and ZY are tangent to circle O.

A parabola can be represented by the equation x2 = 2y.

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.

Circle O is shown. Chords K M and J L intersect at point A. The measure of arc K J is 170 degrees. The measure of arc L M is 80 degrees.

A parabola and its focus are shown on the graph. The vertex of the parabola is at (0,0).

A general formula for a parabola is x2=4py.What is the value of p in the equation x2=12y?

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

Which is true regarding secants and chords?

Segments RT and SU are diameters of circle O.

In circle D, ∠EDH ≅ ∠EDG.

Line segment SU is a diameter of circle V.

In circle P, diameter QS measures 20 centimeters.

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