Studied by 1 person

5.0(1)

Get a hint

Hint

Looks like no one added any tags here yet for you.

1

point

exact location (GPS)

New cards

2

line

atleast two points, and continues forever in both directions

New cards

3

line segment

part of a line you can measure

New cards

4

ray

you know where it starts and it continues in one direction

New cards

5

angle

when two rays share a common end point (vertex)

New cards

6

vertex

end point

New cards

7

sides

consists of line segments

New cards

8

degree

a unit of measure for angles

New cards

9

right

exactly 90 degrees

New cards

10

acute

less than 90, but greater than 0

New cards

11

obtuse

bigger than 90, but less than 180

New cards

12

straight

measures 180

New cards

13

plane

flat surface that extends forever in all directions (floor, wall)

New cards

14

parallel lines and perpendicular lines

continues forever in both directions, lie in same plane, same distance apart, never intercept, and same slope

New cards

15

skew lines

don’t lie in the same plane, and don’t intercept

New cards

16

**c**omplementary lines

2 angles = 90 (c, 90) (c before s, and 90 before 180)

New cards

17

**s**upplementary lines

2 angles = a straight line (180) (s after c, 180 after 90)

New cards

18

acute triangles

all angles are less than 90

New cards

19

right triangles

one angle is 90 (makes a square at the corner)

New cards

20

obtuse triangles

one angle greater than 90

New cards

21

equilateral triangles

all sides are the same length (60 each) (60 x 3 = 180) (3 sides = triangle)

New cards

22

isosceles triangles

two sides that are exactly the same length + angles have same measurements

New cards

23

scalene triangles

every side has a __different measure__, __usually__ __one line__ is __obtuse__

New cards

24

Congruent Statement

Ex: ABC = XYZ

New cards

25

Corresponding Parts

a = x | b = y | c = z | ab = xy | bc = yz | ac = xz

New cards

26

transversal

crosses at least two parallel lines and forms special angles

New cards

27

alternate interior angles

inside parallel lines

New cards

28

alternate exterior angles

angles that are outside of parallel lines, and alternate on transversal

New cards

29

corresponding angles

angles that lie on same location, but on different lines

New cards

30

similar triangles

the measures of corresponding angles are equal, and the measures of corresponding sides are proportional

New cards

31

congruent

New cards

32

quadrilateral

4-sided figure (360 total degrees)

New cards

33

parallelogram

two pairs of parallel sides, opposite sides are equal, have to have 360

New cards

34

rectangle

two pairs of parallel sides, all angles are 90 degrees (a square can be a rectangle, but a rectangle cannot be a square)

New cards

35

square

two pairs of parallel sides, all sides are congruent, all sides are 90 degrees (a square can be a rectangle, but a rectangle cannot be a square)

New cards

36

rhombus

all sides have same measure, two pairs of parallel sides (equal)

New cards

37

pentagon

five-sided figure (total degree = 540)

New cards

38

he__**x**__agon

si__**x**__-sided figure (total degree = 720)

New cards

39

heptagon

seven-sided figure (total degree = 900)

New cards

40

octagon

eight-sided figure (total degree = 1080)

New cards

41

__**n**__o__**n**__agon

__**n**__i__**n**__e-sided figure (total degree = 1260)

New cards

42

__**deca**__gon

ten-sided figure **(decade)** (total degree = 1440)

New cards

43

dodecagon

twelve-sided figure (total degree = 1800)

New cards

44

trapezoid

one pair of parallel sides

New cards

45

total degree formula

(n - 2)180 (n = amount of triangles formed)

New cards

46

regular polygon formula

find total degree, then divide by the sides | **Ex: 900 / 7 = 128.7 for every angle**

New cards

47

adjacent angles

angles in a transvertical that are across from each other

New cards