Show:
basics
lines
angles
special angles
100
location in space
What is a point
100
lines that cross at exactly one point
What are intersecting lines
100
two sides/rays that share a vertex
What is an angle
100
two angles that share a ray
What are adjacent angles
200
series of points that go on forever in both directions
What is a line
200
two lines that have no points in common
What are parallel lines
200
measurement of angles
What is a degree
200
two angles that added together measure 90 degrees
What are complementary angles
300
part of a line with two endpoints
What is a segment
300
lines not on the same plane
What are skew lines
300
measures less than 90 degrees
What is an acute angle
300
two angles that added together measure 180 degrees
What are supplementary angles
400
one endpoint and all points that go forever in one direction
What is a ray
400
lines that intersect to form right angles
What are perpendicular lines
400
measures between 90 degrees and 180 degrees
What is an obtuse angle
400
to angles formed by intersecting lines that are opposite each other and are equal in measurement
What are vertical angles
500
points on the same line
What is collinear
500
choose the answer...sometimes, never, always a line can curve
What is NEVER
500
measures 180 degrees
What is a straight angle
500
equal angles
What are congruent angles