vocab
acute angle
less that 90 degrees but more than 0
angle
collinear rays that share a vertex
line
made up of many points
polygon
A closed figure with at least 3 sides
ray
part of a line, has one endpoint and extends forever in the other direction.
midpoint
the middle point in a line
congruent
equal
interior
inside
exterior
outside
obtuse angle
more that 90 degrees but less that 180
complementary
equals 90 degree
perimeter
The distance around something
distance
the size or rotation of an angle
linear pair
2 angles that equal 180 degrees
vertical angles
2 non adjacent lines that intersect to make congruent angles
adjacent angles
2 rays that share a vertex
angle bisector
a ray that splits a segment into congruent angles
collinear
share a line
degree
the linear length
segment bisector
a line that intersects at the midpoint
perpendicular
2 segments that intersect at 90 degrees
opposite rays
2 rays that share an end point and extends in opposite directions to create a line.
supplementary
equals 180 degrees
regular
convex and everything is congruent
irregular
could be concave but sides are not congruent.