QuestionZeichne Strecken von $2 \mathrm{~cm}$, $3,5 \mathrm{~cm}$, $4,7 \mathrm{~cm}$. Prüfe Strecken A, B, C, D auf Richtigkeit. Zeichne Linien durch $P_{1}$ und $P_{2}$: eine parallel, eine senkrecht zu $g$. Überprüfe mit Geodreieck.

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Question: How can you verify that two lines are perpendicular to each other?
A) By estimating the angle between them B) By comparing them to another set of perpendicular lines C) By measuring the angle between them with a protractor or Geodreieck, it should be 90 degrees D) By asking a friend
Answer: C) By measuring the angle between them with a protractor or Geodreieck, it should be 90 degrees