Solution: The volume of a triangular pyramid is the area of the bottom multiplied by the height.

Can you see it from the front and side? What is the height of the triangular pyramid? 1

You can know from the top view and the top view? Is the bottom an isosceles right triangle? What is a right angle? 1 ? The area of the bottom is 1/2* 1* 1.

Therefore, the volume of triangular pyramid V = 1/3s, and the bottom area * is high.

? = 1/3 * ( 1/2 * 1* 1)* 1 = 1/6

That is, the answer choice? A

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