Geometry!!
3-dimensional Figures
-has length, width, and height
*cube, rectangular prism, pyramid, cone, cylinder, sphere
-made of a face (flat side), edge (2 faces coming together), and vertex (3 edges coming together

2-dimensional Figures
-length and width
*circle, rectangle, square, triangle
-made of sides and angles (2 sides coming together)

Lines
-lines (goes on in both directions forever)
-line segments (a part of a line)
-ray (has an end point and goes on forever)
-angle (2 rays sharing a common point)
-right angle (90 degrees)
-parallel lines (2 lines that never cross)
-intersecting lines (2 lines that cross)
-diameter (line segment traveling from a point on the circle, through the center point, to a point on the circle)
-radius (half of a diameter).

Polygon
-a 2D shape
-a closed shape
-a shape with straight sides
*triangle, square, rectangle, pentagon, hexagon, octagon

Triangles
-right triangle
-equilateral triangle (all sides are equal)
-isosceles triangle (2 sides are equal)
-scalene triangle (no sides are equal)

Quadrilaterals
-4 sided polygons
-square
-rectangle
-trapezoid
-parallelogram
-rhombus