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26 Cards in this Set
 Front
 Back
Point

A location in space having no dimensions


Postulate 4

If two planes intersect, then their intersection is a line


Line

a set of points that extends infinitely in two opposite directions


Intersection

the set of points that are in both figures. Two lines intersect in a point. A plane and a line intersect in a point


Plane

a flat surface that exists without end in all directions


Supplementary angles

Two angles whose measures add up to 180 degrees


Postulate 1

through any to points there is exactly one line.


Bisector of an angle

a ray that divides the angle into two congruent adjacent angles


Complementary angles

Two angles whose measures have a sum of 90 degrees


A line segment

a part of a line cosisting of two endpoints and all points that lie between them


Straight angle

Angles measues 180 degrees


Acute angle

Angle measures between 090 degrees


Coplanar points

points that lie in the same plane


Vertical angles

Two lines intersect the angles that are not adjacent to each other


adjacent angle

Two angles that have a common vetex and a common side, but no interior points in common


Obtuse angle

Angle measures etween 90180 degrees


Congruent angles

have the same measure


Right angle

Angle measures exactly 9o degrees


Postulate 2

through any three noncollinear poinst, there is exactly one line


Degree

The size of an angle is measured with this unit


Space

the set of all points


Coplanar points

points that lie on the same line


Postulate 3

If tow points lie in a plane, then the line jioning them lies in that plane


Angle

the figure formed by two rays that have a common endpiont. The endpoint is called a vertex of the angle. Each ray formed a side of the angle.


Congruent line segments

have the samemeasure. The midpoint of a segment is thhe point that dividesthe segment into two conqruent segments.


Perpendicular lines

two lines that intersect to form equal adjacent right angles
