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What shape has 2 pairs of parallel sides equal length of diagonals which do not cross at 90 degrees?
The shape you are describing is a rhombus. A rhombus has two pairs of parallel sides, with opposite sides being equal in length. The diagonals of a rhombus are also equal in length, but they do not intersect at 90 degrees; instead, they intersect at a 90-degree angle.
What shape has perpendicular diagonals?
A square has perpendicular diagonals. They are all the same angle (90 degrees). All sides are the same length. To find area of a square, use the formula A=4s. (Area=4xthe lenghth of the sides.)
How many diagonals does a pentadecagon have using a formula?
Number of diagonals in a polygon with n sides is n*(n-3)/2 A pentadecagon has 15 sides, so n = 15 Number of diags = 15*12/2 = 90
How many diagonals in a 15 sided polygon?
There are 90 diagonals in a 15-sided polygon.
How many diagonals in a 15 gon?
1/2*15*(15-3) = 90 diagonals.
What shape has 4 equal sides and diagonals intersect at 90 degrees?
A rhombus.
What shape has two pairs of equal sides. But no right angles Its diagonals do not cross at 90 degrees?
A parallelogram
What shape has two pairs of parallel sides and equal length diagonals which do not cross at 90 digress?
A rectangle.
What shape has 2 pairs of parallel sides equal length of diagonals which do not cross at 90 degrees?
The shape you are describing is a rhombus. A rhombus has two pairs of parallel sides, with opposite sides being equal in length. The diagonals of a rhombus are also equal in length, but they do not intersect at 90 degrees; instead, they intersect at a 90-degree angle.
What shape has 2 pairs of adjacent sides which are equal and its diagonals cross at 90 degrees but are not equal?
A kite
What are three attributes of a square?
The sides are equal The angle between adjacent sides is 90 degrees There are two diagonals The diagonals are equal in length The diagonals make 90 degrees with each other The diagonals make 45 degrees with the sides
What shape has perpendicular diagonals?
A square has perpendicular diagonals. They are all the same angle (90 degrees). All sides are the same length. To find area of a square, use the formula A=4s. (Area=4xthe lenghth of the sides.)
What is the shape has 2 pairs of parallel sides and equal length diagonals which do not cross at 90 degrees?
A rectangle would fit the given description
What shape has 2 pairs of parallel sides and equal length diagonals which do not cross at 90 degrees?
A parallelogram (or rectangle) which is not a rhombus (or square).
Which other shape besides square and rhombus have diagonals that intersect at 90 degrees angles?
It is a kite that has diagonals that intersect each other at 90 degrees.
How many diagonal lines does a pentadecagon have?
90. Number of diagonals = number_of_sides × (number_of_sides - 3) ÷ 2 → For a Pentadecagon which has 15 sides: Number of diagonals = 15 × (15 - 3) ÷2 = 15 × 12 ÷ 2 = 90
How many sides does a polygon have when it has 90 diagonals explaining your answer?
Let the sides be n and use the formula for the diagonals of a polygon:- If: 0.5*(n^2 -3n) = 90 Then: n^2 -3n -180 = 0 Solving the above quadratic equation: n = -12 or n = 15 Therefore the polygon has 15 sides
