Shapes and Designs

Investigations:

Vocabulary

1. Line
2. Line Segment
3. Polygon
4. Sides
5. Vertex/Vertices
6. Equilateral Triangle
7. Isosceles Triangle
8. Scalene Triangle
9. Square
10. Rectangle
11. Parallelogram
12. Reflection Symmetry
13. Line of Symmetry
14. Rotation Symmetry
15. Point of Rotation
16. Regular Polygon
17. Irregular Polygon
18. Tiling

Vocabulary Word	Definition	Picture
1. Line	a straight line that has no end in either direction
2. Line Segment	consists of two points of a line and all the points between these two points
3. Polygon	a shape formed by line segments, called sides, so that each of the segments meets exactly two other segments, and all of the points where the segments meet are endpoints of the segments
4. Sides	the line on the edge of a shape joining its vertices
5. Vertex/Vertices	point where sides meet
6. Equilateral Triangle	a triangle with 3 equal sides and 3 equal angles	ray.htm Details Download 1 KB
7. Isosceles Triangle	a triangle with 2 equal sides and 2 equal angles
8. Scalene Triangle	a triangle with no equal sides and no equal angles
9. Square	a quadrilateral with 4 equal sides and 4 right angles, opposite sides are parallel, two diagonals that bisect at right angles, 4 lines of symmetry
10. Rectangle	a quadrilateral with 4 right angles and 2 pairs of opposite equal parallel sides
11. Parallelogram	a quadrilateral with opposite sides that are parallel and of equal length and opposite angles that are equal
12. Reflection Symmetry
13. Line of Symmetry
14. Rotation Symmetry
15. Point of Rotation
16. Regular Polygon	A polygon that has all of its sides equal and all of its angles equal.
17. Irregular Polygon	A polygon which has at least two sides with different lengths or two angles with different measures.
18. Tiling	Also called a tessellation.The filling of a plane surface with geometric shapes without gaps or overlaps.These shapes are usually regular polygons or other common polygons.