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Question
Give a definition of the following term. Are there other terms that need to be defined first? What are they, and how might you define them?
perpendicular lines
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Solution
Yes, we need to understand terms like point, line, ray, angle, plane, circle, and quadrilateral before defining the required terms.
Two lines in the same plane, p and q, are considered perpendicular if they make a right angle and are written as p ⊥ q.
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