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A heptagon has seven sides, a quadrilateral has four, and a triangle has three. So 4 heptagons, 2 quadrilaterals, and 3 triangles have 4*7 + 2*4 + 3*3 sides = 28 + 8 + 9 sides = 45 sides.

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Q: How many sides do 4 heptagons 2 quadrilaterals and 3 triangles have altogether?
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How many sides do 2 heptagons 3 nonagons and 3 quadrilaterals have altogether?

A heptagon has seven sides, a nonagon has nine, and a quadrilateral has four. So in 2 heptagons, 3 nonagons, and 3 quadrilaterals there are: (2*7)+(3*9)+(3*4) = 14 + 27 + 12 = 53 sides altogether.


Quadrilaterals are polygons that have three sides?

Quadrilaterals are polygons with four sides. Triangles are polygons with three sides.


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There are 12 sides in a dodecagon, 4 in a quadrilateral, and 3 in a triangle. So in 4 dodecagons, 4 quadrilaterals, and 4 triangles there are 4*12 + 4*4 + 4*3 = 48 + 16 + 12 = 76 sides altogether.


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Are right triangles quadrilaterals?

No because all triangles have only 3 sides whereas quadrilaterals have 4 sides.


How many sides do 2 heptagons and 2 pentagons have altogether?

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How many sides do 4 triangles and 4 heptagons have in all?

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How many sides do 1 decagon 5 quadrilaterals 5 octagons and 5 triangles have altogether?

A decagon has ten sides, a quadrilateral has four, an octagon has eight, and a triangle has three. So in 1 decagon, 5 quadrilaterals, 5 octagons, and 5 triangles there are 1*10 + 5*4 + 5*8 + 5*3 = 10 + 20 + 40 + 15 = 85 sides altogether.


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How many sides do 2 quadrilaterals and 3 pentagons have altogether?

A quadrilateral has four sides and a pentagon has five. So 2 quadrilaterals and 3 pentagons have 2x4 +3x5 sides = 8 + 15 = 23 sides altogether.