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Multiple Choice:
1.) It is a segment drawn from the center of the circle to any point on the circle.
A. Radius B. Diameter C. Chord D. Arc
2.) It is a segment joining any two points on the circle.
A. Radius B. Diameter C. Chord D. Arc
3.) An arc of a circle whose measures greater than a semicircle
A. Minor arc B. Semicircle C. Major Arc D. Intercepted Angle
4.) It is an angle whose vertex is at the center of the circle and with two radii as its sides
A. Circumscribed Angle B. Central Angle C. Intercepted Angle D. Inscribed Angle
5.) An arc that lies in the exterior of an inscribed angle and has endpoints on the angle;
A. Minor arc B. Semicircle C. Major Arc D. Intercepted Angle
6.) What is the sum of the measures of the central angles of a circle with no common interior points?
A. 120 B. 240 C. 360 D. 480
7.) An arc measuring one-half the circumference of a circle
A. Minor arc B. Semicircle C. Major Arc D. None of These
8.) If an inscribed angle of a circle intercepts a semicircle, then the angle is _____.
A. Ac ute B. Obtuse C. Right D. Straight
9.) It is an angle whose vertex is on a circle and whose sides contains chords of a circle.
A. Circumscribed Angle B. Central Angle C. Intercepted Angle D. Inscribed Angle
10.) Arcs of the same circle or of congruent circles with equal measures.
A. Minor Arc B. Major Arc C. Intercepted Arc D. Congruent Arc

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Answer:

1.) A

2.) C

3.) C

4.) B

5.) D

6.) C

7.) B

8.) C

9.) D

10.) A

Step-by-step explanation:

1.) The a line segment from the center of the circle to any point on the circle is a radius of the circle. By definition of a circle, all radii have the same length. We also use the term radius to mean the length of a radius of the circle.

2.) Any straight line segment connecting two points on a circle or ellipse is called a chord.

3.) A major arc is an arc that is greater than a semicircle. Adjacent angles are two angles that have the same vertex and a common side between them.

4.) A central angle is an angle whose vertex is located at the center of the circle and whose sides are radii. An arc is an unbroken part of the circle.

5.) Intercepted angleThe arc that is inside an inscribed angle and whose endpoints are on the angle. radiusThe distance from the center to the outer rim of a circle.

6.) 360°

Sum of Central Angles: The sum of the measures of the central angles of a circle with no points in common is 360° .

7.) semi-circle

An arc whose length is exactly one-half of the circumference of the circle is simply called a semi-circle. The line connecting the endpoints of a major arc or minor arc is called a chord.

8.) Proof: The intercepted arc for an angle inscribed in a semi-circle is 180 degrees. Therefore the measure of the angle must be half of 180, or 90 degrees. In other words, the angle is a right angle.

9.) Inscribed angle: An angle whose vertex is a point on a circle and whose sides contain chords. The measure of an inscribed angle is half of the measure of its intercepted arc.

10.) Congruent arcs are arcs on circles with congruent radii that have the same degree measure. A minor arc is an arc whose degree measure is between 0º and 180º. A semicircle is an arc whose degree measure is exactly 180º. A major arc is an arc whose degree measure is between 180º and 360º.

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