Question

Please answer the following questions correctly. (Using the word bank, please match accordingly.)

Answer 1

1(a) The degree of an arc formed by the endpoints of a central angle is equal to the degree of the central angle.

The answer is TRUE.

TO ILLUSTRATE:

Note that angle x at the center O of the circle is the same measure as angle AB

(b) A radius of a circle is a chord of a circle. This is FALSE.

A chord runs from one end of the circle to the other, that is from one point on the circumference to the other. A radius however, runs from the center to a point on the circumference. This is illustrated below;

1 (c) One radian is;

`\begin{gathered} The\text{ angle between two radii of a circle that forms an arc on} \\ \text{the circumference }which\text{ is equal to the length of the radius} \end{gathered}`

Answer:

The angle made at the center of a circle by an arc whose length is equal to the radius of the circle.

1 (d) Chord; A straight line connecting two points on the edge of a circle

1 (e) Circle E and F are said to be concentric when they have the same center.

Answer; Circle with that same center.