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58 Cards in this Set

  • Front
  • Back
all three angles acute
acute triangle
perpendicular segment from vertex of triangle to opposite side, extended if necessary
altitude
line introduced into a diagram for the purpose of clarifying a proof
auxiliary line
lying on the same line
collinear
two angles whose sum is 90*
complementary angles
two angles who have the same measures
congruent angles
triangles in which all pairs of corresponding parts (angles and sides) are congruent
congruent triangles
polygon in which each interior angle has a measure less than 180*
convex polygon
length of shortest path between two objects
distance
segment that joins two nonconsecutive (nonadjacent) vertices of a polygon
diagnol
having all angles congruent
equiangular
having all sides congruent
equilateral
triangle in which at least two sides are congruent
isosceles triangle
unproved assumption
postulate
a four sided polygon
quadrilateral
a straight set of points that begins at an endpoint and extends infinitely in one direction
ray
a triangle in which no two sides are congruent
scalene triangle
the common endpoint of the two rays that form an angle
vertex angle
a pair of angles in the exterior of a figure formed by two lines and a transversal, lying on alternate sides of the transversal and having different vertices
alternate exterior angles
a pair of angles in the interior of a figure formed by two lines and a transversal, lying on alternate sides of the transversal and having different vertices
alternate interior angles
a figure formed by two rays with a common endpoint
angle
side that is congruent to neither of the other sides
base
the "then" clause in a conditional statement
conclusion
a statement in the "if p, then q" where p and q are declarative statements
conditional statement
a statement associated with a conditional "if p, then q" having the form "if q, then p"
converse
"if not q, then not p"
contrapositive
in a figure formed by thow lines and a transversal, a pair of angles on the same side of the transversal, one in the interior and one in the exterior of the figure, having different vertices
corresponding angles
the side opposite the right angle in a right triangle
hypotenuse
the "if" clause in a conditional statement
hypothesis
"if not p, then not q"
inverse
quadrilateral in which two disjoint pairs of consecutive sides are congruent
kite
quadrilateral in which both pairs of opposite sides are parallel
parallelogram
parallelogram in which at least one angle is a right angle
rectangle
parallelogram in which at least two consecutive sides are congruent
rhombus
parallelogram that is both a rhombus and a rectangle
square
mathematical statement that can be proved
theorem
a line that intersects two coplanar lines in two distinct points
transversal
a quadrilateral with exactly one pair of parallel sides
trapezoid
the common endpoint of the two rays that form an angle
vertex
quadrilateral in which two disjoint pairs of consecutive sides are congruent
kite
quadrilateral in which both pairs of opposite sides are parallel
parallelogram
parallelogram in which at least one angle is a right angle
rectangle
parallelogram in which at least two consecutive sides are congruent
rhombus
parallelogram that is both a rhombus and a rectangle
square
mathematical statement that can be proved
theorem
a line that intersects two coplanar lines in two distinct points
transversal
a quadrilateral with exactly one pair of parallel sides
trapezoid
the common endpoint of the two rays that form an angle
vertex
a figure formed by two rays with a common endpoint
angle
side that is congruent to neither of the other sides
base
the "then" clause in a conditional statement
conclusion
a statement in the "if p, then q" where p and q are declarative statements
conditional statement
a statement associated with a conditional "if p, then q" having the form "if q, then p"
converse
"if not q, then not p"
contrapositive
in a figure formed by thow lines and a transversal, a pair of angles on the same side of the transversal, one in the interior and one in the exterior of the figure, having different vertices
corresponding angles
the side opposite the right angle in a right triangle
hypotenuse
the "if" clause in a conditional statement
hypothesis
"if not p, then not q"
inverse