A line segment drawn from the center of a circle to a point on the circle.
What is the radius.
100
A convincing logical argument that used definitions and previously proven conjectures in an organized sequence to show that a conjecture is true.
What is a proof.
200
A triangle whose base angles are congruent.
What is an isosceles triangle.
200
A line segment drawn through the center of a circle with both endpoints on the circle.
What is the diameter.
200
An educated guess.
What is a conjecture.
300
A quadrilateral with two distinct pairs of consecutive congruent sides.
What is a kite.
300
An angle with its vertex at the center of a circle.
What is a central angle.
300
A conjecture that has been proven to be true.
What is a theorem.
400
A quadrilateral with two pairs of parallel sides.
What is a parallelogram.
400
An angle with its vertex on the circle and sides intersecting the circle at two distinct points.
What is an inscribed angle.
400
A form of proof in which statements are written in one column as a list and the reasons for the statements are written next to them in a second column.
What is a two-column proof.
500
A two-dimensional closed figure of three or more line segments connected end to end.
What is a polygon.
500
The measure of an inscribed angle is ________ the measure of its intercepted arc.
What is half.
500
A proof that begins by assuming that an assertion is true and then shows that this assumption leads to a contradiction of a known fact.
What is proof by contradiction of an indirect proof.