what is vertex ? and perpendicular in maths ?
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vertex is a point which joins two lines in closed fig
sakshi129:
Thanks for comment and you not tell what is perpendicular
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in technical term a vertex is a point in 3D space which represents a position, if three vertex are joined together in a line you get a triangle, it's similar to that
a perpendicular means when two lines intersect or join making an Angle of 90 °
a perpendicular means when two lines intersect or join making an Angle of 90 °
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