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GEOMETRY A1

VOCAB.

QuestionAnswer
angle the intersection of nonlinear rays at a a common endpoint.
angle bisector a ray that divides an angle into two congruent angles.
collinear points that lie on the same plane.
angle the intersection of nonlinear rays at a a common endpoint.
angle bisector a ray that divides an angle into two congruent angles.
collinear points that lie on the same plane.
congruent having the same measure.
coplanar points that lie on the same plane.
midpoint the point on a segment exactly halfway betweeen the endpoint of the segments.
perimeter the sum of the lengths of the sides on a polygon.
perpendicular lines,segements,or rays that form right angles.
polygon a closed figure formed by a finite number of coplanar segments callde side
segment bisectors a segment, line or plane that inersects a segment at its midpoint
vertex the common endpoint
volume a measure of the amount of space enclosed by a three dimensional figure.
adjacent common vertex and side with no common interior points (nothing overlaps)
linear pair adjacent angles that are formed by opposite rays.
vertical angles two nonadjacent angles formed by tow lines (always form a "X")
vertical angles two nonadjacent angles formed by tow lines (always form a "X")
complementary angles two angle whose sum equal 90
complementary angles two angle whose sum equal 90
supplementary angles two angle whose sum equal 180 (any linear pair=180)
supplementary angles two angle whose sum equal 180 (any linear pair=180)
perpendicular linea form 90 angles
perpendicular linea form 90 angles
inductive reasoning use number of specific example to arvie at a conclusion.
conjecture a concluding statement.
counter example an example that proves a statement is false .
commpound statement joined by "AND.OR"
conjunction statement joined by "AND"
disconjunction statement joined by "OR"
negation not "P" is the negation of the statement "P".
conditional statement a statment that can be written in "IF-THEN FORM".
hypothesis the phrase of a conditional statement that immediatley follows the word "IF".
conclusion the phrase of a conditional statement that immmediatley follows the word "THEN".
converse formed by exchanging hypothesis and conclusion.
inverse formed by negating both the hypothesis and the conclusion.
contrapositive formed by negating both parts of the converse.
PARALLEL LINES NEVER INTERSECT (CROSS) IN THE SAME PLANE (COPLANAR).
TRANSVERSAL A LINE THAT GOES THROUGH TWO OR MORE LINES AT TWO DIFFERENT POINTS.
SKEW LINES DO NOT INTERSECT AND ARE NOT COPLANAR (NOT ON THE SAME PLANE)
PARALLEL PLANES PLANE THAT DO NOT INTERSECT.(CROSS)
VERTICAL ANGLES ARE ALWAYS WHAT...? EQUAL
ALTERNATE EXTERIOR ANGLES NON ADJACENT INTERIOR ANGLES THAT LIE ON THE OPPOSITE SIDE OF THE TRANSVERSAL.
ALTERNATE EXTERIOR ANGLES NONADJACENT EXTERIOR ANGLES THAT LIE ON THE OPPOSITE SIDE OF THE TRANSVERSAL.
CONSECTIVE INTERIOR ANGLES INTERIOR ANGLE ON THE SAME SIDE OF THE TRANSVERSAL.
CORRESPONDING ANGLES LIE ON THE SAME SIDE OF THE TRANSVERSAL ON THE SAME SIDE OF THE LINES.
VERTICAL LINE SLOPE IS ALWAYS...? UNDEFINEED
HORIZONTAL LINE SLOPE IS ALWAYS...? ZERO (0)
SLOPE OF PARALLEL LINES VERTICAL LINES ARE PARALLEL & NON VERTICAL LINES HAVE THE SMAE SLOPE.
SLOPE OF PERPENDICULAR LINES 2 NON VERTICAL LINES ARE PERPENDICULAR ONLY IF THE PRODUCT OF THEIR SLOPE IS -1.
Created by: ladyviking