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29 Cards in this Set
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3 Building Blocks of Geometry

Points, Lines, Planes


Point

no side, only location
Ex: .P 

Line

straight arrangements of points,
extends forever 

Plane

flat surface, extending forever


Colinear/Coplanar Points

two or more points that line on the same line/plane.


Congruent

Two geometric figures are congurent if and only if they are identical in shape and size.


Conditional/IfThen Statement

A statement that can be expressed as an ifthen statement.
Ex: IF a polygon is a hexagon, THEN it has exactly 6 sides. 

Converse Statement

The statement formed by reversing the two parts of a conditional statement.


Biconditional/ IfThen Statement

A statement in which a conditional statement and it's converse are both true.
Ex:An angle is a right angle IF AND ONLY IF its measure is 90. 

Right/Acute/Obtuse Angle

Angle whos measure is 90
Angle whos measure is less then 90. Angle whose mesure is 180 

Angle bisector

a ray that had an end point on the vertex of an angle and that divides the angle into two angles of equal measure.


Parallel

two lines on the same plane that never intersect


Complementary Angles

angles that are 90 when added together


Supplementary Angles

two angles that if added together = 180.


Vertical Angles

angles that are across from each other that have the same measure.


Diagonals of a Polygon

When a line from the point of a polygon connects diagonally to the other point.


Equilateral Polygons

a polygon whose sides are all congruent


Equiangular

A polygon whose angles are equal in measure


Regular

Polygon that is both equilateral and equiangular


Scalene Triangle

When all 3 sides of the triangle are different lengths.


Isoceles Triangle

When 2 or more sides are equal to each other


Medians of Triangle

A segment connecting the midpoint of aside to the opposite vertex.


Altitude of Triangle

A perpendicular segment from a vertex to the opposite side.


Trapezoid

a quadrilateral with exactly one pair of parallel sides.


Kite

a quadrilateral with exactly 2 paris of distinct congruent sides.


Parallelogram

A quadrilateral in which both parits of opposite sides are parallel.


Rhombus

an equilateral parallelogram


Square

an equiangular rhombus or an equilateral rectangle.


Rectangle

an equiangular parallelogram.
