Unit Test Answers

Line EF is tangent to circle G at point A.

Circle O has a circumference of approximately 28.3 cm.

A circular table top has a radius of 24 inches.What is the area of the table top, to the nearest square inch? Use 3.14 for .

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

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

Angle K measures 67º and angle L measures 119°.

Which circle has a central angle that measures 40°?

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.

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Consider circle C with angle ACB measuring radians.

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.

The chords intersect at point U.

Which circle shows that measures 60°?

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.