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If 2 non -parallel lines are perpendicular to two other straight lines, each to each. Show that the acute angle between the first two pair of lines is

equal to the acute angle between the second pair of lines?


You should assume one diagram
2 lines make an angle ........draw a ⊥r line to each of those lines and extend them such that they intersect at one side
then it forms a quadrilateral we know 2 angles of them are 90°
therefore the remnant angles are equal and equal to 90°

.............................hope this helps u  pls mark as best answer
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