1. Answer;
- Triangle
Explanation;
The cross section formed by a plane that contains a vertical line of symmetry for a tetrahedron is a Triangle.
A tetrahedron also a triangular pyramid, is a polyhedron composed of four triangular faces, six straight edges, and four vertex corners.
2. Answers
- Triangle
Explanation;
The cross section formed by a plane that intersects three faces of a cube is a Triangle. A cross section is the shape we get when cutting straight through an object. The shape of the cross-section of a solid depends upon the orientation of the cutting plane to the solid.
They are completely diffrent fruits
1)x+1/2x-1=46
2) The length is 94/3(or 31 1/3) and the width is 44/3(or 14 2/3)
Answer:

Step-by-step explanation:

Sorry it took so long