###
a line contains ( ) points

at least 2

###
a plane contains ( ) points ( )

at least 3; not all in one line

###
through any 2 points, there is/are ( ) line(s)

exactly 1

###
through any 3 points, there is/are ( ) plane(s)

at least 1

###
through any 3 noncollinear points there is/are ( ) plane(s)

exactly 1

###
if 2 points are in a plane, then the line that contains the points is ( )

in that plane

###
if 2 lines intersect, they intersect ( )

in exactly 1 point

###
through a line and a point not in the line there is/are ( ) plane(s)

exactly 1

###
if 2 lines intersect, then ( ) plane(s) contains the lines

exactly 1

###
median of a triangle

segment from a vertex to the midpoint of the opposite side

###
altitude of a triangle

perpendicular segment from a vertex to the line that contains the opposite side

###
perpendicular bisector

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

###
if a point lies on the perpendicular bisector of a segment, then the point is ( )

equidistant from the endpoints of the segment

###
if a point is equidistant from the endpoints of a segment, then the point ( )

lies in the perpendicular bisector of the segment

###
if a point lies on the bisector of an angle, then the point is ( )

equidistant from the sides of the angle

###
if a point is equidistant from the sides of an angle, then the point ( )

lies on the bisector of the angle

###
if 2 lines are parallel, then ( )

all points on one line are equidistant from the other line

###
if 3 parallel lines cut off congruent segments on one transversal, then they ( )

cut off congruent segments on every transversal

###
a line that contains the midpoint of one side of a triangle and is parallel to another side ( )

passes through the midpoint of the 3rd side

###
the segment that joins the midpoints of 2 sides of a triangle ( ) and ( )

is parallel to the 3rd side; is 1/2 as long as the 3rd side

###
definition of a rectangle

parallelogram with 4 right angles

###
definition of a rhombus

parallelogram with 4 congruent sides

###
definition of a square

parallelogram with 4 right angles and 4 congruent sides

###
the diagonals of a ( ) are congruent

rectangle

###
the diagonals of a rectangle are ( )

congruent

###
the diagonals of a ( ) are perpendicular

rhombus

###
the diagonals of a rhombus are ( )

perpendicular

###
each diagonal of a ( ) bisects 2 angles of the parallelogram

rhombus

###
each diagonal of a rhombus ( )

bisects 2 angles of the rhombus

###
the midpoint of the hypotenuse of a right triangle is ( )

equidistant from the 3 vertices

###
if an angle of a parallelogram is a right angle, then ( )

the parallelogram is a rectangle

###
if 2 consecutive sides of a parallelogram are congruent, then ( )

the parallelogram is a rhombus

###
definition of a trapezoid

quad with exactly one pair of parallel sides

###
bases

parallel sides of a trapezoid

###
legs

nonparallel sides of a trapezoid

###
definition of an isosceles trapezoid

trapezoid with congruent legs

###
BAT TRAP

base angles of an isosceles trapezoid are congruent

###
median of a trapezoid

segment that joins the midpoints of the legs

###
the median of a trapezoid ( ) and ( )

is parallel to the bases; has a length equal to the average of the base lengths

### Please allow access to your computer’s microphone to use Voice Recording.

## We can’t access your microphone!

### Click the icon above to update your browser permissions above and try again

Example:

### Reload the page to try again!

Reload

## Press Cmd-0 to reset your zoom

## Press Ctrl-0 to reset your zoom

### It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

## Your microphone is muted

### For help fixing this issue, see this FAQ.

##### NEW! Voice Recording

Click the mic to start.