Geometry 1109 Self Test
Postulate 7
All straight angles are congruent
Postulate 5
An angle has only one bisector
Postulate 11
Angles that are supplements of the same angle, or congruent angles, are congruent
Postulate 3
A line segment can be bisected at one point
Three undefined terms in geometry are __________, ____________, and ____________
point, line, plane
The two instruments used in construction are the ____________ and ____________
straightedge, compass
vertex
the common endpoint of the two rays that form an angle
What are the objectives of geometry?
to discover facts and to develop the ability to prove facts
complementary angles
two angles whose measures have a sum of 90
line segment
two endpoints and all points between them
vertical angles
two pairs of nonadjacent angles formed by two intersecting lines
congruent segments
segments with the same length
Postulate 1
Only one straight line can be drawn through two points; two points determine a straight line
bisector of a line segment
a line, ray, or line segment that intersects the segment at its midpoint, dividing the line segment into two congruent points
