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## All about Shapes

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**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