Circles
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High School Geometry
High School Geometry
Math

 Name _____________________________ Date ___________________ (Key 1 - Answer ID # 0866051)
1.

Regular octagon ABCDEFGH is inscribed in circle O. Diameter is extended as shown. Find (a) m (b) mABF (c) mHJG (d) mK.

2.

A, B, C, D, E, and F are points on a circle. If mAEC = 73 and mECD = 40, what is the value of y - x?

3.

Tangent intercepts circle O at B. Chord is drawn. If m = 58, find mCBD.

4.

In circle O, diameter , radius , and chord are all drawn. If mAOC = 50, find mOCB.

5.

Congruent inscribed angles always intercept congruent arcs.
 False True

6.

In circle O, chords and intersect at E. m = 63 and mCEB = 83. Find the sum of the measures of and .

7.

Tangents and are drawn to circle O. If the measure of major is 242, find mC.

8.

How is it possible for a huge circle and a tiny circle to each have the same number of degrees?

9.

What is the relationship between a central angle and an angle inscribed in the same arc?

10.

In circle O, secant and chord intersect. If m = 186 and m = 47, find mCBD.

11.

There is no rule for an angle formed by a secant and a chord. How do you find its measure?

12.

The measure of a minor arc is defined to be the measure of its ______.

Circles
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