Question

How to identify perpendicular line segments like suppose CD is perpendicular to AB but some perpendicular lines only come in Right angle without the tail thingy at the left.How to tell them like i dis with the proper perpendicular line. |
PS...—|— you see the left tail
But in here |__ there js only 90 degree

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Answer 1

Answer:

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Answer 2

Answer:

: If the slopes of two lines can be calculated, an easy way to determine whether they are perpendicular is to multiply their slopes. If the product of the slopes is , then the lines are perpendicular. In this case, the slope of the line is and the slope of the line is .

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