Lesson 2: Circle Termilogies

Question 1

Circle

Answer 1

Set of all points equidistant from a given point called the center of the circle

Question 2

Radius

Answer 2

> Distance from the center to any point on the circle
½ the measure of its dimension

Question 3

Diameter

Answer 3

Distance across the circle through its center. Also known as the longest chord

Question 4

Chord

Answer 4

A segment whose endpoints are on the circle

Question 5

Arc

Answer 5

Is a part of the circle which is located between two points on the circle

Question 6

3 types of arcs

Answer 6

Major arc
Minor arc
Semi circle

Question 7

Major arc

Answer 7

Measures more than 180°

Question 8

Minor arc

Answer 8

Measures less than 180° degrees

Question 9

Semi circle

Answer 9

Measures exactly 180°

Question 10

Central angle

Answer 10

Is an angle whose vertex is the center of the circle and whose sides are radii of the circle

Question 11

Inscribed angle

Answer 11

An inscribed angle is an angle whose vertex is on the circle and whose sides contain chords of the circle

Question 12

Intercepted arc

Answer 12

The arc that lies in the interior of its inscribed angle and has an endpoints on the angle

Question 13

Secant

Answer 13

It is a line that intersects any two points on the circle

Question 14

Tangent

Answer 14

It is a line that intersects a circle at exactly one point on the circle. The point of the circle is called the point of tangency

Question 15

Right angle

Answer 15

An angle exactly of 90°