Geometry Definitions
textbook tutorials
 definitions 
constructions

postulates and theorems

internet activities and resources
mathematical logic
symmetry and similarity
points, lines and planes
angles
parallel lines
triangles
quadrilaterals
polygons
circles
3Dimensional Geometry
conclusion
angle of rotation
between
acute angle
alternate interior angles
acute triangle
consecutive angles
decagon
center
base
conditional statement
contraction
colinear
angle
alternate exterior angles
altitude of a triangle
consecutive sides
exterior angle
circle
cylinder
congruent
dilation
congruent segments
angle bisector
corresponding angles
base of a triangle
opposite angles
hexagon
circumscribed angle
equation of a plane
conjecture
image
coplanar
angle measure
consecutive interior angles
height
opposite sides
interior angle
concentric circles
lateral surface area
contrapositive
line of symmetry
intersect
complementary
linear pair
hypotenuse
kite
nonagon
diameter
parallel to a plane
converse
midpoint
congruent angles
same side interior angles
legs
parallelogram
octagon
inscribed angle
prism
counterexample
reflection
line
linear pair
same side exterior angles
median of a triangle
quadrilateral
pentagon
radius
pyramid
definition
rotation
parallel
obtuse angle
transversal
incenter of a triangle
rectangle
regular polygon
tangent
sphere
deductive reasoning
similar polygons
perpendicular
right angle
vertical angles
obtuse triangle
rhombus
surface area
hypothesis
transformation
perpendicular bisector
side of an angle
right triangle
square
volume
inductive reasoning
translation
plane
supplementary
sides
trapezoid
xy plane
inverse
point
vertex of an angle
vertex (verticies)
xz plane
postulate
segment bisector
vertical angles
yz plane
Reflexive Property
skew
Symmetric Property
Transitive Property
theorem
undefined term