Vocab Quiz #2

An unproven statement that is based on observations

• inductive reasoning

• conjecture

• deductive reasoning

• postulate

Used when you find a pattern in specific cases and then write a conjecture for the general case.

• theorem

• conjecture

• deductive reasoning

• inductive reasoning

A specific case for which the conjecture is false.

• counterexample

• lie detector test

• axiom

• contrapositive

Divides an angle into two congruent angles.

• midpoint

• collinear

• angle bisector

• vertex

having the same measure

• converse

• collinear

• coplanar

• congruent

the endpoint where two segments come together

• vertex

• angle bisector

• adjacent

• midpoint

the sum of two angles is 90°

• supplementary

• linear pair

• complementary

• vertical

the point that is halfway between the endpoints of a line segment

• distance

• perimeter

• midpoint

• angle bisector

the sum of the angles is 180°

• supplementary

• complementary

• vertical

• adjacent

a logical statement that has two parts: a hypothesis and a conclusion

• inductive reasoning

• conditional statement

• postulate

• proof