The Maths Prof: Parallel & Perpendicular Lines

In this lesson I solve problems involving parallel & perpendicular lines. The lesson is directed towards Cambridge AS Level maths students but could also be useful to higher/extended IGCSE/GCSE students. In question 1 00:52 , I show how to prove whether or not points are collinear (i.e on the same straight line), in question 2 04:13 , we have to find unknown values of k and are told that points are collinear and in question 3 08:48 , we have to prove that two lines are perpendicular to each other. Other useful lessons related to this one include: 🌟 Finding the gradient    • The Maths Prof: Finding Gradients of Strai...   🌟 Factorising quadratics    • The Maths Prof: Factorising Quadratics (pu...   🌟 Solving quadratics by Factorising    • The Maths Prof: Solving Quadratic Equation...   🌟 Solving equations with algebraic fractions 1    • The Maths Prof: Solving Equations with Alg...   🌟 Solving equations with algebraic fractions 2    • The Maths Prof: Solving Equations with Alg...   🌟 Finding the midpoint    • The Maths Prof: Finding Midpoints of Strai...   🌟 Using midpoints    • The Maths Prof: Using Midpoints To Find Co...   I hope that you find the lesson useful. Subscribe to my YouTube channel to stay up to date with new uploads and follow me on Instagram @themathsprof for more maths! :-)