2d shapes properties.

1. A curved line
A straight line

2. 2D SHAPES
 Two dimensional shapes.
 They are flat.
 They have no volume

3. 2d SHAPES
POLYGONS
S
REGULAR
NON
POLYGONS
IRREGULAR

4. POLYGONS
All sides are
Straight

5. NON - POLYGONS
Not all sides are
straight
At least, one side is curved

6. REGULAR
POLYGONS
 All sides are the same length
 All angles are the same

7. 3 SIDES - Regular TRIANGLE - equilateral
4 SIDES – Regular QUADRILATERAL
square

8. 5 SIDES – Regular
6 SIDES – Regular
7 SIDES – Regular
8 SIDES – Regular
9 SIDES – Regular
10 SIDES – Regular
11 SIDES – Regular
12 SIDES – Regular
PENTAGON
HEXAGON
HEPTAGON
OCTAGON
NONAGON
DECAGON
HENDECAGON
DODECAGON

9. PENTAGON
HEXAGON
HEPTAGON
OCTAGON
NONAGON
DECAGON
HENDECAGON
DODECAGON
REGULAR POLYGONS SORTED BY NUMER OF SIDES

10. IRREGULAR
POLYGONS
 All sides are not the same
length
 All angles are not the same

11. 3 SIDES - Irregular TRIANGLE
Isosceles
Right angled
2 sides =
1 right angle
Scalene
all sides not =

12. 4 SIDES – Irregular QUADRILATERAL

13. 5 SIDES – Irregular
PENTAGON
6 SIDES – Irregular
HEXAGON
7 SIDES – Irregular
HEPTAGON
8 SIDES – Irregular
OCTAGON
9 SIDES – Irregular
NONAGON
10 SIDES – Irregular
DECAGON
11 SIDES – Irregular
HENDECAGON
12 SIDES – Irregular
DODECAGON

14. PENTAGON
HEXAGON
HEPTAGON
OCTAGON
NONAGON
DECAGON
HENDECAGON
DODECAGON
IRREGULAR POLYGONS SORTED BY NUMER OF SIDES

15. NON - POLYGONS
Not all sides are
straight
At least, one side is curved

16. CIRCLE
SEMICIRCLE
OVAL
ELLIPSE