Class X

Sometimes it is necessary to melt a solid of a particular shape to convert it in to a different shape.

A line which intersect a circle in only one point is called a tangent to that circle.

“Probably it will rain today” or “Probably school will be closed today” or in the next election, a Party ‘P’ may probably come in power.

Here, h is any arbitrary non-zero constant and a is an assumed mean which is also arbitrary.

The standard form of a quadratic equation is ax2 + bx + c = 0 where a, b, c are real numbers (a≠ 0) and x is a variable.

A sequence is said to be an Arithmetic Progression (abbreviated as AP) if the difference of each term, except the first term, from the preceeding term is always same, i.e.,

Two linear equations in two variables are together called a system of simultaneous linear equations in two variables.

Trigonometry is so important that higher studies of mathematics and science are not possible without its knowledge.

Rhombus but not square, prove that its all sides are equal but the diagonals are not equal.

The length of the boundary of a circle is called its circumference or its perimeter.