A flat surface that has no thickness and extends without end in the directions of all its lines.
What is a plane?
100
Two angles whose measures have a sum of 90 degrees.
What is complementary angles?
100
All angles congruent.
What is equiangular?
100
The abbreviation SAS stand for what.
What is side angle side?
100
A parallelogram with four congruent sides and four right angles.
What a square?
200
A series of points that extends in two opposite directions without end.
What is a line?
200
If a=b and b=c, then a=c.
What is transitive property?
200
A line that intersects two coplanar lines at two distinct points.
What is a transversal?
200
If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the two triangles are congruent.
What is Side-Angle-Side Postulate?
200
A quadrilateral with both pairs of opposite sides congruent.
What is a parallelogram?
300
An example for which the conjecture is incorrect.
What is a counterexample?
300
An if-then statement.
What is a conditional?
300
Used to display the steps that prove a theorem.
What is a two-column proof?
300
If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent.
What is Angle-Side-Angle Postulate?
300
A parallelogram with four congruent sides.
What is a rhombus?
400
A conclusion you reach using inductive reasoning.
What is a conjecture?
400
When a conditional and its converse are true, you can combine them as a true __________.
What is a biconditional?
400
If a transversal intersects two parallel lines, then same-side interior angles are supplementary.
What is Same-Side Interior Angles Theorem?
400
If two angles and a nonincluded side of one triangle are congruent to two angles and the corresponding nonincluded side of another triangle, then the triangles are congruent.
What is Angle-Angle-Side Theorem?
400
A quadrilateral with two pairs of adjacent sides congruent and no opposite sides congruent.
What is a kite?
500
Reasoning that is based on patterns you observe.
Inductive reasoning.
500
Switches the hypothesis and the conclusion of a conditional.
What is a converse?
500
The sum of the measures of the angles of a triangle is 180.
What is Triangle Angle-Sum Theorem?
500
CPCTC.
What is corresponding parts of congruent triangles are congruent?
500
A quadrilateral with exactly one pair of parallel sides.