Co-Ordinate Geometry

Co-Ordinate Geometry

1. Area of a Triangle

2. Perpendicular Distance from a Point to a Line

3. Intersection Points

   • X Axis - Let y = 0
     • X Intercept
   • Y Axis - Let x = 0
     • Y Intercept
   • Intersection of 2 Lines - Simultaneous Equations

4. Angles created between two lines

   • Angle of Inclination

5. Slopes

   • Slope Formula
   • y = mx + c
   • Parlallel Lines - Have the Same Slope
   • Perpendicular Lines - (m1)(m2) = -1

6. Equation of the Line

   • y - y1 = m(x - x1)
   • y = mx + c
     • m = Slope
     • c = Y-Intercept

7. Distance Fornula

8. Midpoint Formula

9. Finding special points

   • Orthocentre
   • Centroid
   • Circumcentre

10. Dividing a Line Segment in a Ratio