Figures in the Coordinate Plane (Sec 9-1) — Unit test Answers

What is the center of a circle represented by the equation (x+9)2+(y−6)2=102?

In circle O, MP is a diameter.

Circle O is shown. Line segments C O And A O are radii. Lines are drawn from points C and A to point B to form chords B C and B A. Angle C B A is 80 degrees.

Consider circle C with angle ACB measuring radians.

Which circle shows that measures 60°?

Circle O is shown. Tangents B C and B A intersect at point B outside of the circle. The measure of the first arc formed is 146 degrees.

Consider circle N with radius 30 cm and radians.

What is the radius of a circle whose equation is x2+y2+8x−6y+21=0?

What is the radius of a circle whose equation is (x – 7)2 + (y – 10)2 = 4?

Line segment ON is perpendicular to line segment ML, and PN = 10.

Circle H is shown. Line segments G H and J H are radii. The length of G H is 20. Angle G H J is 162 degrees.

Circle R is shown. Tangents F G and H G intersect at point G outside of the circle to form an angle with a measure of 50 degrees. Point E is on the second arc. Arc F H has a measure of x degrees.

A parabola and its directrix are shown on the graph.

Circle B is shown. Line segments C B, D B, and E B are radii. Angle C B E is 52 degrees and angle E B D is 160 degrees.

Given: Circle O; intercepts ; D intercepts Prove: