its 2
21
A heptagonal prism has 20 edges.
it hAS 21 EDGEs7+7+7=21 edges
7+7+7=21 edges
its 2
It has 9 faces It has 21 edges Its end faces are parallel to each other
there is 13 edges in a heptagonal pyramid.
There are 7 or 9, depending on the bases.
A heptagonal what? Prism, pyramid or something else?
21
A heptagonal prism has 20 edges.
A heptagonal based pyramid has: 8 faces 8 vertices & 14 edges
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it hAS 21 EDGEs7+7+7=21 edges
Seven.
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