Unit Test Answers

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.

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

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.

Which statements about the clock are accurate? Select three options.

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

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 Y is shown. Line segments X Y and Z Y are radii. The length of X Y is 16. Sector X Y Z of the minor angle is shaded.

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 .

Two chords intersect at a point inside a circle that is not the center of the circle. Which statement must be true?

Circle O has a circumference of approximately 28.3 cm.

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

What is the center of a circle represented by the equation (x−5)2+(y+6)2=42?

Consider circle N with radius 30 cm and radians.

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.

Two circles are concentric if they have the same center.