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What are two shapes whose side lengths are proportional and whose angles are the same measure?
They are called SIMILAR.
How is a hexagonal pyramid a polyhedron?
A polyhedron is a simply connected 3-dimensional shape whose faces are all regular polygons. A hexagonal pyramid is a special case in which one face is a hexagon and six faces are triangles.
What does congruent mean if shapes are not the same size?
You can have two shapes - a small one and a big one - whose angles are congruent but the sides are not. In that case the shapes are not congruent but similar.
What is an irregular object?
It means that the shape of the object doesn't fit into a small list of predefined shapes (for which simple formulae for volume and surface area are known). Such a list may typically include shapes like spheres, rectangular boxes, cylinders, pyramids, cones, certain sections (cutouts) of the previous ones, etc.
What can you say about objects whose speed versus time curves are close to the theoretical speed verus time line?
They are the objects whose measured speed as a function of time agrees well with theory.
