Shapes Vocab

A ___________ is an angle with its vertex at the center of a circle, like ∠DAC.

A _______(E̅F̅) is a segment whose endpoints are points on a circle.

A chord is formed by the intersection of the circle and a _______ line, like E̅F̅.

The arc with the greater measure is the ----------, like ⏜DBC.

The arc with the lesser measure is the _________, like ⏜DC.

An is an angle whose vertex is on a circle and whose sides contain chords of the circle. In this circle it is ∠CAB.

We can also say that ⏜CB is an ________________ because the rays of the angle cross the circle at points C and B. The measure of the _______________ is twice that of the inscribed angle.

(write once)

A __________ to a circle is a line that intersects the circle in exactly one point, called the point of tangency.

A tangent to a circle is a line that intersects the circle in exactly one point (Q), called the _______________.

A _____________________ has its two sides tangent to the circle with a vertex that is outside of the circle.

For example, ∠XYZ