3E - Parallel and perpendicular lines
3E - Content video: Parallel lines
This video covers the theory and an example relating to parallel lines.
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3E - Content video: Perpendicular lines
This video covers the theory and an example relating to perpendicular lines.
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3E - Example 1: Perpendicular lines
Prove that the triangle, with vertices \(A(3,5)\), \(B(4,1)\) and \(C(8,2)\), contains a right-angle.
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3E - Example 1: Video solution
3E - Example 1: Practice
Question 1:
A triangle \(ABC\) contains a right-angle at vertex \(A\). The vertices are located at \(A(4,2)\), \(B(7,8)\) and \(C(x,y)\).
3E - Example 1: Solutions
Question 1:
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