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1

a two-dimensional pattern that you can fold to form a three dimensional figure

net

2

you can see the top, front, and side of an object in the same drawing

isometric drawing

3

shows the top view, front view, and right-side view of a three dimensional figure

orthographic drawing

4

indicates a location and has no size

point

5

a straight path that extends in two opposite directions without end and has no thickness. Infinitely many points

line

6

a flat surface that extends without end and has no thickness. It has infinitely many lines

plane

7

the part of a line that consists of two points, called endpoints, and all points between them

segment

8

part of a line that consists of one endpoint and all the points of the line on one side of the endpoint

ray

9

the set of points two or more geometric figures have in common

intersection

10

the distance and direction of a point from the origin of a number line

coordinate

11

the absolute value of the difference of the coordinates of the points

distance

12

the point that divides a segment into two congruent segments

midpoint

13

a line, segment, or ray that intersects a segment at its midpoint

segment bisector

14

two rays that have the same endpoint

angle

15

the endpoint of the two rays that form an angle

Vertex

16

angles that measures below 90

acute

17

angle that measures 90

right angle

18

angle that measures above 90

obtuse

19

angle that measures 180

straight

20

equal

congruent

21

two coplanar angles that have a common side and vertex but no common interior points

adjacent angles

22

two angles whose sides form two pairs of opposite rays

vertical angles

23

the sum of two angles equal 90

complementary angle

24

the sum of two angles equal 180

supplementary

25

a ray that divides an angle into two congruent angles

angle bisector

26

lines that intersect and form right angles

perpendicular lines

27

a line, segment, or ray that is perpendicular to the segment at its midpoint

perpendicular bisector

28

sum of lengths of a figure's sides

perimeter

29

the amount of space a flat object takes up in squares

area

30

a type of reasoning that reaches conclusions based on a pattern of specific examples or past events

inductive reasoning