# Geometry Quiz Vocab

## 16 terms

### Deductive Structure

A thought process in which conclusions are based on previous assumptions and statements. Contents: Undefined Terms, Postulates, Definitions, and Theorems

### Undefined Terms

Point, line and plane

### Postulate

A proposition that requires no proof and is assumed true

### Definition

A formal statement for the meaning of something

### Conditional Statement

A statement that will only be true when P & Q are true (if P=Q....)

### Hypothesis

A proposition assumed as an argument

### Conclusion

A result that proves conclusive, or a settlement

### Negation

A statements that is true whenever statement P is false and false when statement P is true

### Converse

THe conditional statement formed by switching the antecedent and the consequent of the conditional (Ex. q=>p)

### Inverse

THe statement formed by negating the hypothesis and the conclusion (-p=>-q)

### Contrapositive

A conditional statement resulting from negating and switching the antecedent and the consequent of the original (Ex. -q=>-p)

To cut in half

### Bisector

A point, ray, line or segment that does the dividing

### Midpoint

The middle of a segment

### Trisect

To cut in three equal parts

### Trisectors

Points, lines, rays or segments that do the trisecting