unit 1 vocab

Question 1

line

Answer 1

goes through all points in between and continues forever

Question 2

ray

Answer 2

an end point and continues forever in one direction

Question 3

segment

Answer 3

2 end points and all points between

Question 4

parallel

Answer 4

> >

Question 5

perpendicular

Answer 5

intersect at a 90 degree angle - square in angle

Question 6

congruent

Answer 6

same size and shape - one I through it or half circle if its an angle

Question 7

bisect

Answer 7

to divide in half in 2 equal parts
- anything that goes on forever on either side cannot be bisected

Question 8

midpoint

Answer 8

the point in a segment that divides the segment into 2 equal parts

Question 9

midpoint formula

Answer 9

average x’s and y’s

Question 10

segment addition postulate (SAP)

Answer 10

B = between A and C

AB + BC = AC

Question 11

sides

Answer 11

the two rays or segments of an angle

Question 12

vertex

Answer 12

the common endpoint (intersection) or the rays

Question 13

adjacent

Answer 13

angles that share a vertex and a common side (but no common interior space)

Question 14

angle addition postulate

Answer 14

B = lies in interior of angle MLK

angle MLB + BLK = MLK

Question 15

acute angle

Answer 15

angles that measure between 0 and 90 degrees (doesn’t include 0 or 90 degrees

Question 16

right angle

Answer 16

an angle that measure 90 degrees

Question 17

obtuse

Answer 17

angles that measure between 90 and 180 degrees

Question 18

straight

Answer 18

angles that measure 180 degrees

Question 19

postulate

Answer 19

statements that are accepted as true without proof

Question 20

theorem

Answer 20

must be proven (using definitions, postulates, and other theorems)

Question 21

exists

Answer 21

must be at least one

Question 22

unique

Answer 22

at most 1

Question 23

one and only one

Answer 23

must be exactly one

Question 24

standard form

Answer 24

Ax+ By = C

Question 25

slope intercept form

Answer 25

y = mx +b

Question 26

point-slope form

Answer 26

(y-y1) = m (x-x1)

Question 27

horizontal line

Answer 27

• slope: 0 (0/3) - zero fun
• equation: y=c (constant/number)n

Question 28

vertical line

Answer 28

slope: undefined
equation: x=c (constant/number)

Question 28

)