13-16 Post. Ch 3 Theorems And Definitions Flashcards Preview

Honors Geometry > 13-16 Post. Ch 3 Theorems And Definitions > Flashcards

Flashcards in 13-16 Post. Ch 3 Theorems And Definitions Deck (14):
1

Alternate interior angles theorem

If two parallel lines are cut by a transversal then the pairs of alternate interior angles are congruent

2

Alternate exterior angles theorem

If two parallel lines are cut by a transversal then the pairs of alternate exterior angles are congruent

3

Consecutive interior angles theorem

If two parallel lines are cut by a transversal then the pairs of consecutive interior angles are supplementary
( inside ones, same side, adding to 180)

4

Parallel postulate

If there is a line and a point not on the line then there is exactly one line through the point parallel to the given line

5

Perpendicular postulate

If there is a line and a point not on the line then there is exactly one line through the point perpendicular to the given line

6

Corresponding angles

Two angles are corresponding angles if they have corresponding positions

7

Alternate interior angles

Two angles are alternate interior angles if they lie between the two lines and opposite sides of the transversal

8

Alternate exterior angles

Two angles are alternate exterior angles if they lie outside the two lines and on opposite sides of the transversal

9

Consecutive interior angles

If they lie between two lines and on the same side of the transversal

10

Corresponding angles converse postulate

If two lines are cut by a transversal so the corresponding angles are congruent then the lines are parallel

11

Alternate interior angles converse theorem

If two lines are cut by a transversal so the alternate interior angles are congruent then the lines are parallel

12

Alternate exterior angles converse theorem

If two lines are cut by a transversal so the alternate exterior angles are congruent then the lines are parallel

13

Consecutive interior angles converse theorem

If two lines are cut by a transversal so the consecutive interior angles are supplementary them the lines are parallel

14

Corresponding angles postulate

If two parallel lines are cut by a transversal then the pairs of corresponding angles are congruent