Polygons Shapes with many sides Twodimensional Shapes 2
- Slides: 20
Polygons Shapes with many sides!
Two-dimensional Shapes (2 D) • These shapes are flat and can only be drawn on paper. • They have two dimensions – length and width. • They are sometimes called plane shapes.
Polygons Two-dimensional shapes that have sides made from straight lines. • E. g. triangles squares hexagons
Pentagon • A two-dimensional shape with five straight sides and five angles.
Hexagon • A two-dimensional shape with 6 straight sides and 6 angles.
Octagon • A two-dimensional shape with 8 straight sides and 8 angles.
What shape is this?
A Hexagon
How many lines of symmetry has a Hexagon? 1 5 3 6 4 2
Properties of a Regular Hexagon Ø Has 6 equal sides Ø Has 6 equal angles ØHas 6 lines of symmetry
What shape is this?
A Pentagon
How many lines of symmetry has a Pentagon? 1 3 5 4 2
Properties of a Regular Pentagon Ø Has 5 equal sides Ø Has 5 equal angles ØHas 5 lines of symmetry
Polygons Shapes with many sides!
Lines of Symmetry - Look at these shapes Can you suggest a rule?
Regular shapes Ø All the sides are the same length Ø All the angles are equal Ø Have the same number of lines of symmetry as the number of sides
Look at these shapes Heptagon Octagon How many lines of symmetry?
Lines of symmetry Heptagon 7 Octagon 8
Lines of symmetry Heptagon 7 Octagon 8
Similar shapes and proportions lesson 4-1
The two polygons are
Polygons with all sides of equal length
Polygons with four sides
Four sided polygons
Classification of polygons
Classifying polygons by sides
Irregular polygons shapes
Quadrilateral family tree
Find the measure of the exterior angle
What shape has 3 sides
Which shapes have two pairs of parallel sides
Perimeter of irregular shapes with missing sides
Shape with 3 sides
Shapes
Kandinskey
Properties of solid shapes
A square is a parallelogram always sometimes never
Whats a scalene triangle
Sum of interior angles of polygons
Formula of polygon
