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Www.numeracysoftware.com Properties of 2-D Shapes Equilateral Triangle Isosceles Triangle Right-Angled Triangle Scalene Triangle Quadrilateral Rectangle.

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Presentation on theme: "Www.numeracysoftware.com Properties of 2-D Shapes Equilateral Triangle Isosceles Triangle Right-Angled Triangle Scalene Triangle Quadrilateral Rectangle."— Presentation transcript:

1 Properties of 2-D Shapes Equilateral Triangle Isosceles Triangle Right-Angled Triangle Scalene Triangle Quadrilateral Rectangle Square Oblong Parallelogram Trapezium Rhombus Kite Regular Pentagon Regular Hexagon Regular Octagon Regular Decagon Circle

2 Equilateral Triangle All three sides are the same length and all three angles are equal. Key Features Lines of Symmetry? Rotational Symmetry? Three. Order 3.

3 Isosceles Triangle A triangle with two equal sides and two equal angles. Key Features Lines of Symmetry? Rotational Symmetry? One. None.

4 Scalene Triangle A triangle with three different sides and three different angles. Key Features Lines of Symmetry? Rotational Symmetry? None.

5 Right-Angled Triangle A triangle with one right-angle. Key Features Lines of Symmetry? Rotational Symmetry? Only if it’s an isosceles triangle - one line.isosceles triangle None. Can a Triangle be Right-Angled and Isosceles?Isosceles Yes.

6 Quadrilateral A shape with four sides. Key Features Lines of Symmetry? Rotational Symmetry? It depends on what sort of quadrilateral it is. Names of Special Quadrilaterals RectangleRectangle, Square, Parallelogram, Trapezium, Rhombus, Kite.SquareParallelogramTrapeziumRhombusKite

7 Rectangle A quadrilateral with four right-angles. Opposite sides are the same length.quadrilateral Key Features Lines of Symmetry? Rotational Symmetry? Two, unless the rectangle is a square.square Order 2, unless the rectangle is a square.square Is a Rectangle a Parallelogram?Parallelogram Yes, because both pairs of opposite sides are parallel.

8 Square A quadrilateral with four equal sides and four right-angles.quadrilateral Key Features Lines of Symmetry? Rotational Symmetry? Four. Order 4. Is a Square a Rectangle?Rectangle Yes, because it’s a quadrilateral with four right-angles. Is a Square a Parallelogram?Parallelogram Yes, because both pairs of opposite sides are parallel. Is a Square a Rhombus?Rhombus Yes, because it’s got four sides all the same length.

9 Parallelogram A quadrilateral with opposite sides that are parallel and the same length.quadrilateral Key Features Lines of Symmetry? Rotational Symmetry? Only if it’s a rectangle, a square or a rhombus.rectanglesquare rhombus Order 2.

10 Oblong A rectangle which is not a square.rectanglesquare Key Features Lines of Symmetry? Rotational Symmetry? Two. Order 2. Is an Oblong a Parallelogram?Parallelogram Yes, because both pairs of opposite sides are parallel.

11 Trapezium A quadrilateral with just one pair of parallel sides.quadrilateral Key Features Lines of Symmetry? Rotational Symmetry? Only if it’s an isosceles trapezium. None.

12 Rhombus A quadrilateral with four equal sides.quadrilateral Key Features Lines of Symmetry? Rotational Symmetry? Two. Order 2. Is a Rhombus a Parallelogram?Parallelogram Yes, because both pairs of opposite sides are parallel.

13 Kite A quadrilateral with two pairs of adjacent sides that are equal.quadrilateral Key Features Lines of Symmetry? Rotational Symmetry? One. None.

14 Regular Pentagon A shape with five equal sides and five equal angles. Key Features Lines of Symmetry? Rotational Symmetry? Five. Order 5.

15 Regular Hexagon A shape with six equal sides and six equal angles. Key Features Lines of Symmetry? Rotational Symmetry? Six. Order 6.

16 Regular Octagon A shape with eight equal sides and eight equal angles. Key Features Lines of Symmetry? Rotational Symmetry? Eight. Order 8.

17 Regular Decagon A shape with ten equal sides and ten equal angles. Key Features Lines of Symmetry? Rotational Symmetry? Ten. Order 10.

18 Circle Every point on the circumference is the same distance from the centre. Key Features Lines of Symmetry? Rotational Symmetry? Infinite. Order infinity.

19 END OF PRESENTATION


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