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29 Cards in this Set
- Front
- Back
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conjecture
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a relation of data based on an observation
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adjacent
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touching
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between
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collinear
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intersection
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overlap (upside-down U)
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union
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everything (U)
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subset
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part of the whole (C)
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A'
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"prime" "not" everything not in A
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nullset
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empty set (no possible solution, not even 1) (0 with a slash across)
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disjoint
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two sets that have nothing in common
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axiom/postulate
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a rule universally accepted without proof
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what is the distance formula?
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A (x,y) B (x,y)
AB=square root of (x2-x1)squared + (y2-y1) |
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what is Pythagorean theorem?
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a squared + b squared = c squared
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how do you find the midpoint?
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take the average of the x's and the y's
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formal name for x value in coordinate pair
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abscissa
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formal name for y value in coordinate pair
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ordinate
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delta (triangle)
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change
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complementary angles
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2 angles whose sum is 90 degrees
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supplementary angles
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2 angles whose sum is 180 degrees
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adjacent angles
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share a vertex and a ray BUT NO COMMON INTERIOR POINTS
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angle bisector
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a ray that divides an angle into two adjacent angles that are CONGRUENT
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midpoint of a line
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a point that divides or bisects the line into TWO CONGRUENT lines
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space
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the set of all points
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How many points do you need to make a line?
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2
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How many points do you need to make a plane?
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3
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How many planes can go through a line?
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an infinite number
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linear pair
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two adjacent angles whose non-common sides are opposite rays and these angles are always supplementary
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theorem
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a mathematical statement that can be proven
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geometry
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the study of the set of all points
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converse
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switch hypothesis and conclusion of a postulate/axiom
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