Triangle Congruence: SSS and HL — Unit test Answers

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

Which values for have the same reference angles?

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.

On a unit circle, the vertical distance from the x-axis to a point on the perimeter of the circle is twice the horizontal distance from the y-axis to the same point. What is sin?

Circle F is congruent to circle J, and ∠EFD ≅ ∠GJH.m∠DFE = 80°. What is the measure of arc ?°

Consider circle C with angle ACB measuring radians.

Points D, E, and F are on circle C and EF ≅ DF.

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

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

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

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.

Triangle JKL is equilateral. One side of the triangle, JL, is a diameter of circle M. Which is true about line segments JK and KL?

Circle O has a circumference of approximately 28.3 cm.

Angle G is a circumscribed angle of circle E.

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.