Question

identify the parts relating to ⊙a. what is (overparen{fc})? what is (overline{db})? what is (overline{dh})? what is (overline{ac})? chord diameter radius tangent

Explanation:

Step1: Recall circle - related definitions

A chord is a line - segment that connects two points on a circle. A diameter is a chord that passes through the center of the circle. A radius is a line - segment from the center of the circle to a point on the circle. A tangent is a line that touches the circle at exactly one point.

Step2: Analyze $\overleftrightarrow{FC}$

$\overleftrightarrow{FC}$ is a line that intersects the circle at two points $F$ and $C$, so it is a secant (not in the given options). But if we consider the line - segment $FC$, it is a chord as it connects two points on the circle.

Step3: Analyze $\overrightarrow{DB}$

$\overrightarrow{DB}$ is a ray. It touches the circle at point $C$ and extends infinitely. Since it touches the circle at exactly one point $C$, it is a tangent.

Step4: Analyze $\overrightarrow{DH}$

$\overrightarrow{DH}$ is a ray. It intersects the circle at two points $E$ and $H$, so it is a secant - ray (not in the given options). But considering the concept in terms of the given options, it is not a chord, diameter, radius or tangent.

Step5: Analyze $\overline{AC}$

$\overline{AC}$ is a line - segment from the center $A$ of the circle to a point $C$ on the circle, so it is a radius.

Answer:

What is $\overline{FC}$? chord
What is $\overrightarrow{DB}$? tangent
What is $\overrightarrow{DH}$? (No correct option in the list, but it's a secant - ray)
What is $\overline{AC}$? radius