Question

If $\angle$ACD = ${90}^{\circ }$, then line segment AB is __to line segment CD.

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Answer 1

A line is said to be perpendicular to another line if the two lines intersect at a right angle.Explicitly, a first line is perpendicular to a second line if the two lines meet and at the point of intersection the straight angle on one side of the first line is cut by the second line into two congruent angles.When a line segment is perpendicular to another line segment then the angle between them is ${90}^{\circ }$.