location; has no depth or width

- name using a single capital letter

line

[image]

series of points that extends in two opposite directions without end

Name:

 1) two capital letters

2) one lower case cursive letter

plane

[image]

flat surface with no thickness

NAME:

1) three noncollinear points

2) single capital letter

segment

[image]

part of a line consisting of two endpoints and all points between

NAME:

1) two capital letters

ray

[image]

part of a line consisting of one endpoint and all points of the line going in one direction

NAME:

1) two capital letters

 * must start with endpoint

opposite rays

[image]

two collinear rays with the same endpoint

* form a line

parallel lines

[image]

coplanar lines that do not intersect

* equal slopes

skew lines

[image]

midpoint

[image]

angle

formed by two rays with the same endpoint

NAME:

1) one letter - VERTEX

2) 3 letters - VERTEX in middle

3) a number

acute - less than 90

right = 90 (must have box)

obtuse - greater than 90

straight = 180

perpendicular lines

[image]

two lines that intersect to form right angles

* slopes = negative reciprocals (flip and change)

perpendicular bisector

[image]

Rectangle - 2l + 2w

Square - 4s

circle (circumference) πd or 2πr

Rectangle - lw or bh

Square - s²

Circle - πr²