1. BASIC 2-Dimensional SHAPES OF GEOMETRY

2. Basic Vocabulary
2-Dimensional  Shapes that have only 2 dimensions; width & height
Congruent  Exactly equal in size & shape
Polygon  Closed figure where all the sides are mutually congruent
Quadrilateral  Polygon with 4 sides
Open  Not all the lines that make up the shape connect
Closed  All the lines that make up the shape are connected, there are no gaps in the outline of the shape

3. 4 Sides – 2 longer & 2 shorter Hexagon 5 Sides
Circle
No Sides
Kite or Diamond
4 Sides
Star
5 Sides
Triangle
3 Sides
Rhombus
4 Sides
Heptagon
7 sides
Square
4 Equal Sides
Trapezoid
4 Sides
Octagon 8 Sides
Rectangle
4 Sides – 2 longer & 2 shorter
Hexagon
5 Sides
Parallelogram
4 Sides
Hexagon 6 Sides

4. Polygons Triangle: 3 sides Quadrilateral: 4 sides Pentagon: 5 sides
Hexagon: 6 sides
Heptagon: 7 sides
Octagon: 8 sides

5. Quadrilaterals All 4 Sided
Parallelogram Kite Trapezoid
Rectangle Rhombus
Square