A cone
A triangular based pyramid has zero pairs of parallel faces. In a triangular based pyramid, all three faces of the base are not parallel to the apex, which means there are no pairs of parallel faces in this type of shape.
A heptahedron is a seven-faced polyhedron. The number of pairs of parallel faces in a heptahedron can vary depending on its specific shape and configuration. For example, a regular heptahedron, such as a truncated triangular prism, may have pairs of parallel faces, while other irregular heptahedra may not have any. Therefore, the answer is not fixed and can range from zero to multiple pairs based on the specific heptahedron in question.
ZERO!
ZERO!
Zero parallel faces in a triangular pyramid. There are four faces, and none of them are parallel to each other.
Zero
Well, darling, an octahedron has 12 edges and 8 faces. So, to answer your question, it has zero parallel edges and faces. But hey, who needs parallel when you've got those sharp angles and sleek lines?
A trapezoid (in most cases)
a circle
An isosceles triangle has no parallel sides but it does have 2 sides of equal lengths
The number of pairs of parallel sides in a polygon varies depending on the type of polygon. For example, a rectangle has two pairs of parallel sides, while a trapezoid has one pair. Regular polygons, like a hexagon, typically do not have any pairs of parallel sides. Therefore, the total can range from zero to multiple pairs, depending on the specific polygon in question.
a cylinder