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