## Presentation on theme: "All about Shapes Ask Boffin!."— Presentation transcript:

Properties of Shapes Number of sides Number of angles
Number of lines of symmetry Regular or irregular Right Angles Parallel lines

Shapes Triangles Quadrilaterals Polygons Regular Shapes Key Words

Quadrilaterals Shapes with 4 sides!

What shape is this?

A Square

Properties of a Square Has 4 equal sides Has 4 equal angles
Each angle is a right angle Has 4 lines of symmetry Is a regular shape

What shape is this?

A Rectangle

Properties of a Rectangle
Has 2 pairs of equal sides Has 4 equal angles Each angle is a right angle Has 2 lines of symmetry Is an irregular shape

What shape is this?

A Parallelogram

Properties of a Parallelogram
Has 2 pairs of equal sides Has 2 pairs of equal angles Opposite sides are parallel Has NO lines of symmetry Is an irregular shape

What shape is this?

A Rhombus

Properties of a Rhombus
Has 4 equal sides Has 2 pairs of equal angles Opposite sides are parallel Has 2 lines of symmetry Is an irregular shape

What shape is this?

A Trapezium

Properties of a Trapezium
Has unequal sides One pair of opposite sides are parallel Usually has NO lines of symmetry Is an irregular shape

Quadrilaterals Shapes with 4 sides!

Triangles Shapes with 3 sides!

What type of triangle is this?

An Equilateral Triangle

Properties of an Equilateral Triangle
Has 3 equal sides Has 3 equal angles Each angle is a 60o angle Has 3 lines of symmetry Is a regular shape

What type of triangle is this?

A Right Angled Triangle

A Right Angled Triangle is different
It may be scalene or it may be isosceles But it always has a right angle!

Properties of a Right Angled Triangle
Has 1 right angle May be an isosceles triangle May have 1 line of symmetry Is an irregular shape It will be isosceles and have 1 line of symmetry when these 2 sides are equal.

Triangles Shapes with 3 sides!

Key Words Regular Shape Parallel Perpendicular Vertex Diagonal Bisect

Regular Shape Shapes are regular when
All their sides are the same length All their angles are the same size

Polygons Shapes with many sides!

What shape is this?

A Hexagon

Properties of a Regular Hexagon
Has 6 equal sides Has 6 equal angles Has 6 lines of symmetry

What shape is this?

A Pentagon

Properties of a Regular Pentagon
Has 5 equal sides Has 5 equal angles Has 5 lines of symmetry

Polygons Shapes with many sides!

Regular shapes All the sides are the same length
All the angles are equal Have the same number of lines of symmetry as the number of sides