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- 1. Different Types of Shapes & Signs Used in Mathemetics A project by:- Shrey Verma
- 2. Shape A shape is the form of an object or its external boundary, outline, or external surface, as opposed to other properties such as color, texture, material composition.
- 3. Types Of Shapes: 1 D Shape A 1-D shape is a shape that, when selected, has a beginning point and an ending point . 1-D shapes typically look like lines. Examples are shown here.
- 4. 2D Shape A shape that only has two dimensions (such as width and height) and no thickness.
- 5. Types of 2D Shapes Used in Mathematics 1) Triangle • A triangle is polygon with three side • Interior angles add up to 180°
- 6. Types of 2D Shapes Used in Mathematics 2) Quadrilaterals • A quadrilateral is a polygon with 4 sides. • Interior angles add up to 360°
- 7. Types of 2D Shapes Used in Mathematics Name Image Number of sides Sum of Int Angles Pentagon 5 540 Hexagon 6 720 Heptagon 7 900 Octagon 8 1080 Nonagon 9 1260 Decagon 10 1440
- 8. 3D Shapes 3 Dimensional Shapes have 3 dimensions namely length, breadth and height
- 9. Types of Shapes : 3D Shape Cube Cubes have 6 faces, 12 edges and 8 vertices. All sides on a cube are equal length. All faces are square in shape. A cube is a type of cuboid.
- 10. Types of Shapes : 3D Shape Cyinder Closed Cylinders have 3 faces, 2 edges and 0 vertices. Closed cylinders have 2 circular or elliptical faces and one curved rectangular face.
- 11. Signs
- 12. Signs used in mathematics 1) ± (plus or minus) This means 6 ± 3 is both 6 + 3 and 6 − 3. 2) ÷ or ⁄ (devide) 6 ÷ 3 or 6 ⁄ 3 means the division of 6 by 3. 3) √ (square root) √x means nonnegative number whose square is x.
- 13. Signs used in mathematics 4) ∞(Infinity) ∞ is an element of the extended number line that is greater than all real numbers; it often occurs in limits. 5) ≠ (Inequality) x ≠ y means that ‘x’ and ’y’ do not represent the same thing or value. 6) < (greater than) and > (smaller than) x<y means x is less than y. x<y means x is greater than y.

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