Answer:
The statement "All pyramids are Platonic solids" is false.
A pyramid is a three-dimensional geometric shape with a polygonal base and triangular faces that meet at a common vertex called the apex. Examples of pyramids include the square pyramid, triangular pyramid, and pentagonal pyramid.
On the other hand, a Platonic solid is a specific type of three-dimensional shape that meets certain criteria. To be classified as a Platonic solid, a shape must have the following characteristics:
1. All faces are congruent regular polygons (meaning all sides and angles of the polygons are equal).
2. The same number of faces meet at each vertex.
There are only five Platonic solids: tetrahedron, cube, octahedron, dodecahedron, and icosahedron. These shapes meet the criteria mentioned above.
Since not all pyramids meet the criteria to be classified as Platonic solids, the statement "All pyramids are Platonic solids" is false.
Therefore, the correct answer is option OB: False.
Explanation: