Point
An exact location in space
Line
The set of points that extends infinitely in two opposite directions
Plane
A flat surface that extends infinitely in all directions
A ________ is determined by 2 points (Postulate 1)
line
Collinear points
Are points on the same line
Line segment
A subset of a line that contains two points of the line (end points)
and all points in between those two points
Ray
A subset of a line that contains the endpoint and all points on the
line on one side of the endpoint
A ______ is determined by three non collinear points (Postulate 2)
plane
Coplanar points
Are points on the same plane
Skew lines
Are lines that don't intersect, and there is no plane that contains
them (non coplanar)
Parallel lines
Are distinct coplanar lines that have no points in common
What are two points of a line that are in the plane, then the entire
line containing the points is contained in the plane
Postulate 3
What are two distinct planes that intersect then their intersection
is one line.
Postulate 4
Two distinct planes
either intersect in a line or are parallel
An ________ is the union of two rays with a common endpoint
An_____ is measured in degrees
An angle is measured with a _______.
protractor
Acute angle
Measures between 0 and 90 degrees
Right angle
Measures exactly 90 degrees
Obtuse angle
Measures between 90 and 180 degrees
Straight angle
Measures exactly 10 degrees
Reflex angle
Measures between 180 and 360 degrees
Perpendicular lines
Are lines that intersect at right angles
Congruent lines
...
Geometry
the measure of the Earth "Earth measure