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34 Cards in this Set

  • Front
  • Back
the study of shapes
an accepted statement of fact
an educated guess made from looking at past experiences
Something proven to be true
Inductive Reasoning
reaching conclusions based on a pattern of specific examples or past events
a one-dementional location
a one-dementional seris of points that extends in both directions forever
Line Segment
a piece of a line
a part of a line with one endpoint going in one direction from that endpoint
Collinear Points
points that lie on the same line
points that lie on the same plane
a flat surface that extends in all directions without end and has no thickness
Opposite Rays
two collinear rays with the same end point that together form a line
the set of all points
Intersecting lines
lines that cross each other and they meet at one point and only one point
Parallel lines
coplanar lines that never meet or intersect
Skew Lines
lines taht are on different planes, so they can not intersect
Intersecting planes
planes that cross each other and meet in a line
Parallel planes
planes that never meet and are parallel to each other
two shapes that have the exact same measures
formed by 2 rays with the same endpoint (the vertex)
Acute angle
an angle that has a measure of less tahn 90 degrees
right angle
an angle that has the measure of exactly 90 degress
obtuse angle
an angle that has a measure of more than 90 degress but less than 180 degress
Straight angle
an angle that has a measure of 180 degress
the point that divides the segment into two congruent segments
a line, plane, segment, of ray that cuts something in hafe
perpendicular lines
lines that insect to form right angles
Perpendicular bisector
a line, plane, segment, of ray that cuts something in hafe perpendicularily (into 4 right angles)
Deductive reasoning
a process of reasoning logically from given facts to a conclusion
vertical Angles
Angles whose sides are on opposite rays (they are always congurent and "pointing" and each other)
Adjacent angles
two coplner angles with a common side, a common vertez, and no common interior parts (two angles that are next to one another)
Complimentarty Angles
two angles of whose sum measures 90 degrees
Supplementary Angles
two angles of whose sum measures 180 degress