Circle Terms
Circle Theorems
Circle Problems
Circle Formulas
100
A segment that goes from the center of a circle to its circumference
What is a Radius?
100
If two tangent segments are drawn on a circle from an external point, then those segments are are congruent.
What is Two Tangent Theorem?
100
The area of a circle when the diameter is 12 centimeters.

Answer in its simplest form.

What is 36​*pi

100
The circumference of a circle
What is 2(pi)r?
200
An angle formed by two segments whose vertex lies on the vertex a circle.
What is a Central Angle?
200
Two tangents that intersect outside a circle, making them congruent.
What is the Tangent Segments Theorem?
200
The radius of a circle with a circumference of 56.52 m.
What is 9?
200
Area of a circle.

What is (pi) r(squared)?

300
A region bounded by an arc of the circle.
What is a Sector?
300

The measure of an inscribed angle is equal to one-half the measure of its intercepted arc.

What is Inscribed Angle Theorem?
300

Charmaine has a circular garden that she separates into three equal parts. If the radius of the garden is 9 m. The individual length of the arc of each part.

What is 18.84 m?
300
Tangent.
What is Tan=opp/adj?
400
The point of where the tangent line intersects a circle.
What is the Point of Tangency?
400

If a tangent segment and a secant segment intersect outside a circle, then the square of the measure of the tangent segment equals the product of the measures of the secant segment and its external portion.

What is a Secant-Tangent Theorem?
400
The area when the radius of a circle is 5 centimeters.

Answer in its simplest form.

What is 25​*pi

400
Cosine
What is Cos=adj/hypo?
500
A way to measure where you subdivide the length into 360 arcs of equal lengths.
What is Degrees?
500
Creates a 90 degree angle in a semicircle.
What is an Angle in a Semicircle Theorem?
500

Tangent AC is part of triangle AOC. Triangle AOC lies on Circle O, with O as its radius. 

The degrees of angle AC 

Known: Angle OAC is 16 

Point C intersects with the radius which is also line OC

What is 90 degrees?

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