Perpendicular distance from a point to a line — A/L Combined Mathematics

What should I read on Perpendicular distance from a point to a line?

Work through these in order. Resources in English, Sinhala and Tamil.

1. 1. Start here · Interactive tool
   GeoGebra Geometry — Perpendicular Distance from Point to Line

   This link opens the tool itself — you build the example. It follows its publisher's own syllabus, not the NIE syllabus.

   A free graphing and geometry tool. Use it to draw the figure or graph yourself and test what changes when you move a point or a value.

   Source: GeoGebra — Interactive Geometry Suite
2. 2. Then · Official syllabus resource
   e-thaksalawa — Ministry of Education e-learning

   This link opens the site's home page. Search there for: Perpendicular Distance Formula and Parallel Lines Distance

   The Ministry of Education's e-learning platform, with lessons organised by grade and subject in Sinhala, Tamil and English. Use it to check the topic against what your syllabus covers.

   Source: Ministry of Education, Sri Lanka — e-thaksalawa

Next in the syllabus

Where does Perpendicular distance from a point to a line fit in the syllabus?

Year 1 · Term 3