Parabolas (Sec 9-4) — Unit test Answers

Circle K is shown. Tangents S T and U T intersect at point T outside of the circle. A line is drawn from point T to point R on the opposite side of the circle. It goes through center point K. Lines are drawn from points S and U to center point K.

In circle O, AD and BE are diameters.

In quadrilateral QRST, measures (5x+15)°. Angle TQR measures (4x+3)°.

Circle Y is shown. Chords R T and S U intersect. Arc R S is 106 degrees. The angle that intercepts arc R S is 94 degrees.

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.

Consider circle C with angle ACB measuring radians.

UV and RV are secant segments that intersect at point V.

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

Triangle BCD is isosceles and BC ≅ BD.

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

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.