Question

1. practice: making mental images and drawing inferences think about the shape of pyramids to answer the questions. 1. why is a triangular pyramid a special kind of pyramid? 2. how are oblique pyramids and right pyramids different? 17) practice: making mental images and organizing information fill in the blanks in the venn - diagram. building polyhedrons from a pile of shapes prisms formed by polygons to the bases. both solids formed by a pile of stacked pyramids formed by polygons to the base (except for the vertex)

Explanation:

1. A triangular pyramid is special because all of its faces (including the base) are triangles, while other pyramids have a non - triangular base and triangular lateral faces.
2. In a right pyramid, the apex (top point) is directly above the center of the base, resulting in perpendicular lateral edges to the base. In an oblique pyramid, the apex is not directly above the center of the base, and the lateral edges are not perpendicular to the base. For the Venn - diagram: Prisms have two congruent and parallel bases, so "Have two congruent and parallel bases" can be filled in the Prisms section. For the "Both" section, besides "Solids formed by a pile of stacked", we can add "Are polyhedrons". For the Pyramids section, we can add "Have one base and triangular faces that meet at a vertex".

Answer:

1. Because all of its faces are triangles.
2. In a right pyramid, the apex is directly above the center of the base; in an oblique pyramid, it is not.

Prisms: Have two congruent and parallel bases
Both: Are polyhedrons
Pyramids: Have one base and triangular faces that meet at a vertex