ANGLES
What is the central angle?
An angle which is made up of two radii whose vertex is the center of the circle.
What is a chord?
The name of a segment whose endpoints are on a circle
What is intercepted arc?
This has the same measure of the central angle.
What is a minor arc?
An arc whose measure is less than 180 degrees
What is an exterior angle?
This angle has a measure that is half the difference of its intercepted arcs.
What are interior angles?
The vertical angles made by intersecting chords in a circle.
What is a semi-circle?
An arc which has a measure of exactly 180 degrees
Area formula and circumference formula for a circle
What is pi(radius)^2 and 2(pi)(radius) or pi(diameter)
What is an inscribed angle?
This is formed when two chords intersect at the same point on a circle.
What is diameter?
The special type of chord which passes through the center of the circle
What is 106?
The measure of the intercepted arc if the inscribed angle measure is 53 degrees?
What is the arc length?
The distance along the curved line making up the arc
formula to find arc length?
What is measure of AB ----------------- (CIRCUMFERENCE) 360 degrees
What is equal or the same as?
The measure of a central angle is ________________ the measure of its intercepted arc.
What is a tangent?
This is a line which intersects the circle in exactly one point.
What is 320?
The measure of the major arc if the minor arc's measure is 40 degrees
What is the point of tangency?
The point of intersection between a circle and its tangent line or line segment
what is an isosceles triangle?
Type of triangle that has 2 sides congruent
What is 61 degrees?
The measure of the intercepted arc of a circle is 122 degrees. The measure of any inscribed angle whose endpoints are on that arc is ______________.
What is 21?
If the diameter is 42 cm, then the radius is _______.
What is 90 degrees?
The measure of the angle formed by a radius and its tangent line.
What is the two tangent theorem?
If 2 tangent segments are drawn to a circle from an external point, then the segments are congruent.
What is the Pythagorean Theorem.
The distance formula is derived from this theorem.
c2=a2+b2