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Lesson
The Basic Proportionality Theorem states that if a line is drawn parallel to one side of a triangle and intersects the other two sides, it divides them proportionally. This theorem is a cornerstone of similarity, allowing the calculation of unknown lengths in complex diagrams without direct measurement.
Learning objectives
Understand basic proportionality theorem in the Similarity chapter.
Connect the idea with formulas, examples, and exam-style questions.
Use flashcards, notes, MCQs, and LAQs to check readiness.
Lesson
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Notes
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In this chapter
Now on Basic Proportionality Theorem. Next up: Proportions and Missing Lengths.
Lesson progress
Save this lesson when done. Next: Proportions and Missing Lengths.
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