**Chapter 9: Introduction to Coordinate Geometry (27 videos)**

**9.1: Distance Formula**

**Derivation of Distance formula****Problem 1: Derivation of Distance formula****Use of Distance formula****Problem 1: Use of Distance formula**

**9.2: Collinear Points**

**Showing Collinearity of Points-Distance Formula****Problem 1: Showing Collinearity of Points-Distance Formula****Showing Triangle is Equilateral-Distance Formula****Problem 1: Showing Triangle is Equilateral-Distance Formula****Showing Triangle is Isosceles-Distance Formula****Problem 1: Showing Triangle is Isosceles-Distance Formula****Showing Triangle is Right Angle-Distance Formula****Problem 1: Showing Triangle is Right Angle-Distance Formula****Showing Triangle is Scalene-Distance Formula****Problem 1: Showing Triangle is Scalene-Distance Formula****Verifying Points Forming Square-Distance Formula****Problem 1: Verifying Points Forming Square-Distance Formula****Verifying Points Forming Rectangle-Distance Formula****Problem 1: Verifying Points Forming Rectangle-Distance Formula****Verifying Parallelogram-Distance Formula****Problem 1: Verifying Parallelogram-Distance Formula**

**9.3: Mid-Point Formula**

**Recognition of Mid-Point Formula for Two Points****Problem 1: Recognition of Mid-Point Formula for Two Points****Verification of Midpoint Formula****Problem 1: Verification of Midpoint Formula****Use of Midpoint Formula****Problem 1: Use of Mid point Formula****Problem 2: Use of Mid point Formula**