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### 24 Cards in this Set

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 geometry figures that are the same shape and equal in size congruent line undefined adjacent 1-must have common vertex 2-must have a common side (ray) 3-can not share interior points coplanar all points on the same plane a number that continues on w/ out a pattern..example PI irrational number an unproven statement that is based on observation conjecture acute angle between 0 and 90degrees all the numbers on the numberline R when you measure angles you have to use_________ degrees R stands for.. (NOT definition, just what it stands for) real numbers a ray or line or segment that passes through a mid-point segment bisector a way of reasoning that looks at a special pattern and forms a conjection inductive reasoning straight angle 180degrees point undefined statement accepted w/o proof..AXIOM postulates plane undefined a point that creates 2 equal segments midpoint plane undefined 90degrees right angle collinear all points on the same line a ray that creates 2 equal angles angle bisector add the opposite subtraction oppisite rays A common initial point (same starting point) B must go in oppisite directions C must be collinear obtuse angle greater than 90degrees but less than 180degrees