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12 faces.
The number of parallel lines will depend on whether or not the prism is regular and right. In a regular right prism there are 10 parallel edges along the "length". 10 parallel lines make 45 pairs (1-2, 1-3, 1-4, ... 2-3, 2-4, ... etc).
Each line at a base has one parallel line at the same base and two at the opposite base. Each such quartet makes 6 pairs of parallel lines and there are 5 such quartets - so 30 pairs of parallel lines in the bases.
That makes a grand total of 75 pairs of parallel lines.
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How many faces have pairs of parallel edges in a decagonal based prism?
If the prism is based on regular decagons and it is a right prism, all 12 faces.
How many pairs of parallel lines does a rectangular prism have?
A rectangular prism has three pairs of parallel lines. The top and bottom faces are parallel to each other, the front and back faces are parallel, and the two side faces are parallel. This makes a total of three pairs of parallel lines in a rectangular prism.
Are any of a square based pyramids faces have parallel lines?
Yes. A square consists of two pairs of parallel lines!
What solid figure has three pairs of parallel parallel faces and all faces are congruent?
A cube has three pairs of parallel faces and all faces are congruent.
What shape has 3 pairs of parallel?
3 pairs of parallel lines (2 dimensional) : regular hexagon.3 pairs of parallel faces (3 dimensional) : cube or rectangular prism (also known as cuboid)
How many faces have pairs of parallel lines in heptagonal prism?
i don't know but i don't care
Which shape has 3 pairs of parallel sides?
3 pairs of parallel lines (2 dimensional) : regular hexagon.3 pairs of parallel faces (3 dimensional) : cube or rectangular prism (also known as cuboid)
How many pairs of parallel lines does a diamond have?
A diamond has two pairs of parallel lines.
What are three Polygons with two pairs of parallel lines?
Here are three shapes that have two pairs of parallel lines: square parallelogram rectangle There are many polygons with at least two pairs of parallel lines. hexagon (has 3 pairs of parallel lines) octagon (has 4 pairs) decagon (has 5 pairs)
How many pairs of parallel lines does a rhombus have?
A rhombus has 2 pairs of parallel lines.
Can a hexagon have 2 pairs of parallel lines?
A hexagon generally has 3 pairs of parallel lines.
How many pairs of parallel lines does a dodecagon have?
A regular dodecagon has six pairs of parallel lines.
