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THEOREMS
CIRCLE VOCAB
ARCS AND ANGLES
MORE CIRCLE VOCAB
RANDOM GEOMETRY TERMS
100

Chords are congruent iff their intercepted arc measures are congruent.

What is the CC theorem?

100
The name of a segment whose endpoints are on a circle
What is a chord?
100
This has the same measure of the central angle.
What is intercepted arc?
100
An arc whose measure is less than 180 degrees
What is a minor arc?
100
An angle that is more than 90 degrees
What is an obtuse angle?
200

A chord that is perpendicular to the diameter is bisected along with its corresponding arc.

What is the DPBC theorem?

200
This is a line that intersects the circle at two points.
What is a secant?
200

An angle which is made up of two radii whose vertex is the center of the circle.

What is the central angle?

200
An arc which has a measure of exactly 180 degrees
What is a semi-circle?
200

The relationship between the diameter and radius of a circle.

What is the diameter is twice the radius?

300

Chords that are equidistant from the center of the circle are congruent.

What is the EDC theorem?

300
The special type of chord which passes through the center of the circle
What is diameter?
300

The measure of a central angle is _____________ the measure of its intercepted arc.

What is equal to or same as?

300

Major arc measure is found by this method

What is subtracting the corresponding minor arc measure from 360 degrees?

300

Circles are congruent because of this.

What is the radii are equal?

400

A line is tangent to a circle if the radius is perpendicular to the line at the point of tangency.

What is TPR theorem?

400
This is a line which intersects the circle in exactly one point.
What is a tangent?
400
The measure of the major arc if the minor arc's measure is 40 degrees
What is 320?
400
The point of intersection between a circle and its tangent line or line segment
What is the point of tangency?
400
Type of triangle that has 2 sides congruent
what is an isosceles triangle?
500

If 2 tangent segments are drawn to a circle from an external point, then the segments are congruent.

What is the SEPC theorem?

500
If the diameter is 42 cm, then the radius is _______.
What is 21?
500
The measure of the angle formed by a radius and its tangent line.
What is 90 degrees?
500

This common tangent line does not cross the line created by joining the circle centers.

What is an external common tangent?

500

The theorem used to find a missing length of a right triangle

What is the Pythagorean Theorem?