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There are four triangles in the pyramid.
The base triangle that supports the other three counts as THREE straws, one per each of the three sides.
But the remaining three triangles also use the base triangle for one of their three sides. That means there are only two additional straws for each of the three remaining triangles. So there are SIX straws total in the three triangles supported by the base one.
That's a sum total of NINE (9) unique straws in the pyramid...3 in the base and 2 each in the three supported triangles. ANS.
What else can I help you with?
How many straws would you need to build the Skelton of a triangle based prism?
To build the skeleton of a triangle-based prism, you would need 9 straws: 3 for each edge of the triangle base (totaling 9 straws) and 6 additional straws to connect the vertices of the triangle to form the prism.
How many straws do you need to make a triangle based prism?
six, you need six
How many straws for a triangle prism?
9.
How many faces does a triangular based pyrimid have?
2 faces
How many vertices and faces does a pentagon based pyrimid have?
6,6
How many straws do you need to make a square-based pyramid?
8 straws.
How many straws do you need to make a hexagon based prism?
18 straws.
How many straws do you need to make a pentagon-based pyramid?
10
How many straws needed to make a pentagon based prism?
15
How many straws needed to make a octagonal based prism?
24
How many sides does a pyrimid have?
3
How many straws do you need to make the the skeleton of a square based pyramid?
8
