“Blessed are those who can give without remembering and take without forgetting.”

## STRAIGHT LINES CLASS 11 MATHS

## Select Lecture

How to study Straight Lines (Coordinate Geometry)

Arrangement of Straight Lines topic in NCERT

Meaning and Definition of Equation through Animations

How to find equation of any mathematical shape? Equation of Circle through Definition of Circle

Logical and Algebraical Meaning of Slope of a Line

We can find slope of line using any two passing points of line with proof

Relationship of Slope of line with angle made with positive direction of x-axis measured counter clockwise

How to judge graphical representation of a line using slope

Derivation for angles between two lines using their slopes

Condition of slopes if two lines are parallel

Condition of slopes if two lines are perpendicular

NCERT Exercise 10.1 (Q1 to Q7)

NCERT Exercise 10.1 (Q8 to Q14)

Equation of line using area of triangle rule and collinear condition

Minimum information required to form any equation

Point Slope form of Equation of a straight line

NCERT Exercise 10.2 (Q1 to Q8)

DERIVATIONS OF FORMULAS TO FIND EQUATION OF STRAIGHT LINES

Two-point form

NCERT Exercise 10.2 Question 7 using Two point form

Slope intercept form and meaning of intercept

NCERT Exercise 10.2 Question 5 using Slope intercept form

NCERT Exercise 10.2 Question 6 using Slope intercept form

Intercept form

Normal Form of Straight Line

NCERT Exercise 10.2 Question 8 using Normal Form

NCERT Exercise 10.2 (Q9 to Q13)

NCERT Exercise 10.2 (Q14 to Q20)

Standard Form of Equation of Straight Lines

NCERT Exercise 10.3 (Q1 to Q3)

Derivation for Distance between a point and a straight line

NCERT Exercise 10.3 (Q4 to Q6)

You will need to understand how to make equations and read information from equations before continuing

NCERT Exercise 10.2 (Q7 to Q13)

NCERT Exercise 10.3 (Q14 to Q18)

NCERT Exercise 10.3 Question 11

Miscellaneous Exercise (Q1 to Q7)

Miscellaneous Exercise (Q8 to Q12)

NCERT Miscellaneous Exercise (Q14 to Q19)

NCERT Miscellaneous Exercise (Q20 to Q24)

Miscellaneous Exercise (Q8 to Q12)

Equation of Family of lines passing through the point of intersection of two lines with examples and animation

NCERT Supplementary Exercise 10.4 (Q1 to Q4)

Purpose of coordinate axes

Geometric Shapes follows “rigid body motion”

All equations have two information related to geometric shapes

Geometrical proof for benefits of shifting of origin

Transformation or translation of axes has two parts : shifting of origin and rotation of axes

Derivation for relation between new origin, old coordinate and new coordinate

NCERT Supplementary Exercise 10.5 (Q1 & Q2)