
All about Shapes Ask Boffin!
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!
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
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
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
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
1 Because these angles are equal. How many lines of symmetry has thisTrapezium got?
Properties of a Trapezium • Has unequal sides • One pair of opposite sides are parallel • Usually has NO lines of symmetry • Is an irregular shape
Properties of a Kite • Has 2 pairs of equal sides • Has 1 pair of equal angles • Equal sides are adjacent • Has 1 line of symmetry • Is an irregular shape
Quadrilaterals Shapes with 4 sides!
Triangles Shapes with 3 sides!
How many lines of symmetry has an Equilateral Triangle got? 1 2 3
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
Properties of an Isosceles Triangle • Has 2 equal sides • Has 2 equal angles • Has 1 line of symmetry • Is an irregular shape
How many lines of symmetry has a Scalene Triangle got? None!
Properties of an Scalene Triangle • Has NO equal sides • Has NO equal angles • Has NO lines of symmetry • Is an irregular shape
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 It will be isosceles and have 1 line of symmetry when these 2 sides are equal. • Has 1 right angle • May be an isosceles triangle • May have 1 line of symmetry • Is an irregular shape
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