Shared Flashcard Set

Details

Geometry-Chapter 5
Chapter 5 Definitions
23
Mathematics
9th Grade
09/23/2009

Additional Mathematics Flashcards

 


 

Cards

Term
Congruent figures
Definition
Figures, one of which is the image of the other under a reflection or a composite of reflections. (Same Shape and Size)
Term
Congruence transformation
Definition
A transformation that is a reflection or composite of reflections (an isometry).
Term
Directly congruent
Definition
Figures that are congruent and have the same orientation.
Term
Oppositely congruent
Definition
Figures that are congruent and have opposite orientation.
Term
Obtuse triangle
Definition
A triangle with an obtuse angle.
Term
Right triangle
Definition
A triangle with a right angle.
Term
Acute triangle
Definition
A triangle with all acute angles.
Term
Corresponding Parts
Definition
Parts in the same location when looking at a set of angles or sides.
Term
Alternate Interior Angles
Definition
Angles between two parallel lines that are cut by a transversal and are on opposite sides of the transversal. These angles are congruent.
Term
Alternate Exterior Angles
Definition
Angles outside of the parallel lines cut by a transversal and on opposite sides of the transversal. These angles are Congruent.
Term
Corresponding Angles Postulate
Definition
Corresponding angles have the same measure if and only if the lines are parallel.
Term
ABCD Theorem
Definition
Every isometry preserves Angle measure, Betweenness, Collinearity (lines), and Distance (lengths of segments).
Term
Reflexive Property of Congruence
Definition
F is congruent to F
Term
Symmetric Property of Congruence
Definition
If F is congruent to G, then G is congruent to F.
Term
Transitive Property of Congruence
Definition
If F is congruent to G and G is congruent to H, then F is congruent to H.
Term
Segment Congruence Theorem
Definition
Two segments are congruent if and only if they have the same length (distances are equal).
Term
Angle Congruence Theorem
Definition
Two angles are congruent if and only if their measures are equal.
Term
Corresponding Parts in Congruent Figures
CPCF Theorem
Definition
If two figures are congruent, then any pair of corresponding parts are congruent.
Term
Triangle Sum
Definition
The sum of the measures of the angles of any triangle is 180º.
Term
Quadrilateral Sum
Definition
The sum of the measures of the angles in a convex quadrilateral is 360º.
Term
Polygon Sum
Definition
The sum of the measures of the angles of a convex n-gon is (n-2)•180.
Term
Polygon Exterior Angle Sum
Definition
The sum of the measures of all the exterior angles of a convex n-gon, is 360º.
Term
Perpendicular Bisector Theorem
Definition
If a point is on the perpendicular bisector of a segment, then it is equidistant from the endpoints of the segment.
Supporting users have an ad free experience!