# Circles: Part 1 Unit Test 96%

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question
Line segment SU is a diameter of circle V. What is the measure of arc ST?
56°
question
In circle D, ∠EDH ≅ ∠EDG. What is the length of JG?
5 units
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Which is true regarding secants and chords?
Chords and secants intersect the perimeter of a circle twice. Chords are segments entirely within a circle, while secants are lines or rays that extend through a circle.
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In circle O, AD and BE are diameters. The measure of arc AB is 55° and the measure of arc CD is 25°. What is the measure of EAC?
280°
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What is the measure of arc BEC in circle D?
134°
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Circle D is shown with the measures of the minor arcs. Which segments are congruent?
EF and GF
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What is the measure of arc QR?
104°
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What is the measure of C ?
38°
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Line segment KL is tangent to circle J at point K. What is the length of the radius, r?
10 units
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Which circle has a radius that measures 10 units?
B
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In circle T, ∠PTQ ≅ ∠RTS. What is the measure of PQ?
66°
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Segments RT and SU are diameters of circle O. What is mSRT?
266°
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QR is tangent to circle P at point Q. What is the measure of angle R?
37°
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In circle D, angle ADC measures (7x + 2)°. Arc AC measures (8x - 8)°. What is the measure of ABC?
36°
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In circle A, ∠BAE ≅ ∠DAE. What is the length of BE?
27 units
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Which arc is congruent to EH?
GE
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FH is tangent to circle G at point F. What is the length of the radius, r?
12 units
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What is the measure of arc EF in circle H?
41°
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In circle D, which is a secant?
GH
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What is true regarding two adjacent arcs created by two intersecting diameters?
The sum of their measures is 180°.
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Line segment TS is tangent to circle O at point N. If the measure of QNT is 74°, what is the measure of QNP?
148°
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Line segment BD is a diameter of circle E. What is the measure of arc BC?