Points, Lines, & Planes

Question 1

Point

Answer 1

A location with no size (⚫ A or Point A)

Question 2

Space

Answer 2

A set of all points (⚫ ⚫ ⚫⚫)

Question 3

Line

Answer 3

A series of points that extends in two opposite directions without end. Thickness: None - # of Endpoints: 0 (Arrow on two sides AB or m)

Question 4

Plane

Answer 4

A flat surface with NO thickness that extends forever in all directions (Plane ABC - choose ANY 3 points or Plane R)

Question 5

Segment

Answer 5

A part of a line consisting of two endpoints & all points between them. Thickness: None - # of Endpoints: 2

Question 6

Ray

Answer 6

A part of a line that starts at an endpoint & continues forever in one direction. Thickness: None - # of Endpoints: 1

Question 7

Opposite Rays

Answer 7

Two collinear rays with the same endpoint continuing forever in opposite directions. Form a line.

Question 8

Collinear

Answer 8

Points that lie on that same line

Question 9

Noncollinear

Answer 9

Points that do NOT lie on that same line

Question 10

Coplanar

Answer 10

Points OR Lines that lie on the same plane

Question 11

Non-coplanar

Answer 11

Points OR Lines that do NOT lie on the same plane

Question 12

Postulate or Axiom

Answer 12

An accepted statement of fact

Question 13

Postulate 1-1

Answer 13

Through any TWO points there is exactly one line

Question 14

Postulate 1-2

Answer 14

If two lines intersect, then they intersect in exactly one point

Question 15

Postulate 1-3

Answer 15

If two planes intersect, then they intersect in exactly one line

Question 16

Postulate 1-4

Answer 16

Through any three noncollinear points there is exactly one plane

Question 17

Theorem

Answer 17

A statement you prove is true

Question 18

Quotient

Answer 18

Divide

Question 19

Proportional Fraction

Answer 19

a fraction where the numerator is less than the
denominator.