The Amtrak logo has 3 diagonal blue lines. The name Amtrak is in blue letters and underneath run three diagonal lines going to the left.
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Perpendicular lines Parallel lines Diagonal lines
angles...
their would be still 2 diagonal lines * * * * * There are 8*(8-3)/2 = 8*5/2 = 20 lines joining two vertices. That being the conventional definition of a diagonal, there are 20 diagonals.
65. The equation to figure the number of diagonal lines for any polygon is n(n-3)/2. n= number of vertices
A polygon with n vertices has n*(n-3)/2 diagonals. Therefore, a pentagon, which has 5 vertices, has 5*(5-3)/2 = 5 diagonals.
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No, a non-square rectangle has two: the horizontal and the vertical. A square has four lines of symmetry: the horizontal, the vertical, and two diagonal lines.
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