Unit 1: Introduction to Logic and Euclidean Geometry TEKS

(a)   statement for which both the conditional statement and its converse are true

Statement composed of a hypothesis and a conclusion.

• Biconditional Statements

• Congruent Segments

• Conditional Statement

• Statements

(a)   angles whose angle measurement is equal.

Line segments whose lengths are equal.

• Line Segments

• Congruent Segments

• Postulates

• Segments

Statement believed to be true but not yet proven.

• Conjecture

• True Statement

• False Statement

• Counter Example

(a)   Statement in which the hypothesis and conclusion of the original conditional statement are interchanged and negated.

Define: counterexample

• Statement in which the hypothesis and the conclusion of the original conditional statement are interchanged.

• Statement that is true

• Statement in which the hypothesis and the conclusion are negated.

• Statement used to disprove a statement.

(a)   words or terms used to describe new terms.

The point halfway between the endpoints of a line segment.

• Halfway point

• Midpoint

• Endpoint

• Quarterpoint

Statements accepted as true without requiring proof.

• Postulates

• Definition

• Angles

• Validity