This looks like it would be easy....??

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Gr8fu13

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For the following figure, what is the intersection of the plane with the solid?

I don't even know where to begin since there are no point or measurements or anything. Please help get me started. Thanks so much!
 

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I think you're being asked for a qualitative rather than quantitative description. The figure shows a plane intersecting a triangular prism. What will be the shape of the intersecting surfaces?
 
Would it be a right triangular prism with a plan parallel to the base and intersecting at the edges and lateral faces? I am reqaching here:?.
 
I believe you are still over-thinking this problem. Imagine that the plane is actually a knife, and it is cutting the triangular prism into two pieces. What would be the shape of the cut surface?
 
So the answer would be a "triangle cross-section" since is is parallel to the base. Is this right? Or would it just be a "triangle"? I have a diagram I made of this pictured below that I am going to include in my answer. Would this be appropriate? Thanks!
 

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Last edited:
Gr8fu13 said:
So the answer would be a "triangle cross-section" since is is parallel to the base. Is this right? Or would it just be a "triangle"? I have a diagram I made of this pictured below that I am going to include in my answer. Would this be appropriate? Thanks!
Click to expand...

For this problem, as long as you cut all three vertical sides, you'll get triangle as cross-section.
 
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