Course Content
CHAPTER 1 NUMBERS
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Revision Video for Forming Numbers
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Sets
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CHAPTER 2 NATURAL NUMBERS AND WHOLE NUMBERS
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Integers
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CHAPTER 7 PLAYING WITH NUMBERS
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Basic geometrical ideas(2D)
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Fractions
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Revision(Ist term)
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Decimal Fractions
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Percentage
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Ratio and Proportion
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Understanding elementary shapes
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Perimeter and area
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Revision
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Introduction to Algebra
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Linear equations in one variable
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Constructions
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Data Handling
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Class 6 – MATHEMATICS

Understanding elementary shapes

Triangle

• A triangle with three unequal sides is called a scalene triangle.

• A triangle with two equal sides is called an isosceles triangle.

• A triangle with all its three sides equal is called an equilateral triangle.

• A triangle with all the three sides acute angles is an acute angled triangle.

• A triangle with one obtuse angle and two acute angles is called an obtuse angled triangle.

• A triangle with one of its angles right angle.

• A trapezium is a quadrilateral with exactly one pair of opposite sides parallel.

• A parallelogram is quadrilateral with both pairs of opposite sides parallel and equal.

• A rectangle is a parallelogram in which the adjacent sides are at right angles and it’s opposite sides are equal. It’s diagonals are bisects each other.

• A rhombus is a parallelogram all of whose sides have the same length.

• A square is a parallelogram all of whose sides have the same length and all of whose angles are right angles.

• Polygons are simple closed figures that consist of line segments joined in turn, so that each line segment intersects exactly two other line segments at their endpoints.

• In polygon, the measure of each interior angle is less than 180°.Such a polygon is called convex polygon. If a polygon has at least one interior angle with a measure greater than 180°, the polygon is called a concave polygon.

• A regular polygon is a polygon with all its sides and all its angles equal.