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Reasoning that is based on patterns you observe.

A quadrilateral with both pairs of opposite sides parallel.

A parallelogram with four congruent sides.

A parallelogram with four right angles.

A parallelogram with four congruent sides and four right angles.

A quadrilateral with two pairs of adjacent sides congruent and no oposite sides congruent.

Defined as the set of all points.

Points that lie on the same line.

A conclusion you reach using inductive reasoning.

A flat surface that has no thickness. A plane contains many lines and extendes without end in the direction of all its lines.

If a conditional is true and its hypothesis occurs, then its conclusion guaranteed.

When a conditional and its converse are true, you can combine them as a true biconditional.

Allows you to state a conclusion from two true conditional statements when the conclusion of one statement is the hypothesis of the other statement.

The process of reasoning logically from given statements to a conclusion. If the given statements are true, deductive reasoning produces a true conclusion.

A conditional switches the hypothesis and the conclusion.

An angle greater then 90 degrees.

An angle less than 90 degrees.

Has no diagnoal with points outside the polygon.

Has at least one diagonal with points outside the polygon.

A closed plane figure with at least three sides that are segments. The sides intersect only at their endpoints, and no adjacent sides are collinear.

If three sides of one trianlg eare congruent to the three sides of another triangle, then the two triangles are congruent.

If two sides and the included angle of one triangle are congruent to wo sides and the included angle of another trianlge, then the two trianlges are congruent.

If two angles and the included side of one trianlge are congruent to wo angles and the included side of another triangle, then the two trianlges are congruent.

If two sides of a triangle are congruent, then the angles opposite those sides are congruent.

If two angles and a conincluded side of one triangle are congruent to two angles and the correspoinding nonincluded side of another traingle, then the traingles are congruent.