Parts of a Circle
This part of the circle is 1/2 the distance
What is a radius?
This angle has its vertex at the center and is equal to it's arc
What is a central angle?
Radius to Diameter Formula
What is d=2r? What is r=d/2?
Inscribed angles
What is 1/2 the arc?
Intersecting chords/secants segments
What is a*b = c*d?
This part of the circle is twice the radius
What is the Diameter?
This angle's vertex is on the outside of the circle and half the measure of it's arc
What is an inscribed angle?
Circumference Formula
What is C = 2pi r? What is C = pi d?
Intersecting chords
What is 1/2 the vertical arcs?
Intersecting secant segments
This is a line that touches two ends of the circle and does NOT go through the center
What is a chord?
These two lines are equal distance from the center
What are congruent chords?
Area of a circle Formula
What is A = pi r2?
Intersecting Tangent and chord/secant
What is 1/2 the arc?
What you can use on the test
A line that touches the circle only once and is perpendicular to a radius
What is a tangent?
These two arcs correspond with congruent chords
What are congruent arcs?
Arc length Formula
What is l = 2 pi r (x/360)?
Intersecting Secants, Secant/Tangent, and Tangents
What is 1/2 the difference of the arcs?
Retesting policy for Mr. P
What is earn half the points back?
A line that touches the circle twice and extends outside it
What is a secant?
When two inscribed angles share the same arc
What are overlapping arcs? (What is congruent?)
Equation of a circle, describe the parts
What is (x-h)2 + (y-k)2 = r2? (h,k) center, r radius
Intersecting Tangent and Secant segments
What is a2 = b(b+c)
Who is the coolest math teacher at Bell?
*smirk*