Course Content
Integer
0/1
Sets
0/4
Fractions
0/4
Rational numbers
0/3
Percentage
0/6
Exponents
0/1
Speed, Distance and Time
0/2
Algebraic expressions
0/4
Revision
0/1
Simple Linear Equations One variable
0/2
Pairs of angles
0/2
Properties of triangle
0/2
Constructions
0/1
Perimeter and area
0/6
Revision
0/1
Data Handling
0/3
Revision
0/1
Class 7- MATHEMATICS

Pairs of angles

• The amount of rotation is called the measure of the angle. Degree (°) is the unit of measuring angles.

• 1 rotation = 360°, 1° = 60′, 1’= 60”

• If two angles in the same plane have a common vertex and a common side; but have interiors with no points in common, the angles are adjacent.

• The sum of linear pairs of angles is always 180°

• The sum of the adjacent angles on one side of a line is 180°

• If two lines intersect then the vertically opposite angles are equal.

• If the sum of two angles is 180°, then angles are called supplementary angles, and if their sum is 90°, they are called complementary angles.