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A rectangle has 4 vertices and 4 right angles.
A rhombus has no right angles at its vertices but its diagonals are perpendicular to each other forming 4 right angles.
The 4 vertices of a rhombus contains no right angles but its diagonals are perpendicular to each other thus creating 4 right angles
A rectangle is a 4 sided quadrilateral that has 4 vertices and 4 interior right angles.
It has 20 vertices or angles. * * * * * No! A dodecagon has 12 vertices. A polygon with 20 vertices is an icosagon.