Mathematics rules of H.S.C(geomettry)

#### Rules of Geomettry:

There are 5 chapter in higher secondary geometry.
1. Coordinates.
2. Straight line.
3. Circle.
4. Conics.
5. Vector.
1.Coordinates.

There are 3 types of coordinates:

1. Rectangular coordinates.
2. Polar coordinates.
3. Kertatio coordinates.
For polar coordinates:

For kertatio coordinates:

Find distance between 2 points.

Suppose 2 points are P(x1,y1) and Q(x2,y2) then rule is:

Divider rule: 2 types divide rule:

1.Inner divide.

Suppose 2 points are P(x1,y1) and Q(x2,y2) then rule is:

2.Outer divide.

Suppose 2 points are P(x1,y1) and Q(x2,y2) then rule is:

Find out area of a triangle:

Straight line.

Equation of X-axis,y=0

Equation of Y-axis,x=0

Equation of one point movement straight line:

Equation of two point movement straight line:

Circle.

If center is main point and radius is a then equation of this circle is:

If center is (h,k) and radius is a then equation of this circle is:

By expanding it we found: