Volume formulas review (article) | Khan Academy
A prism has the base that goes through the whole figure, so a triangular prism will have two congruent bases that are a triangle. A triangular pyramid has a triangular base and each base …
Volume of a pyramid or cone (article) | Khan Academy
Where does the 1/3 come from in the formula for the volume of a pyramid? How does the volume of a cone relate? What about oblique pyramids (pyramids that lean to the side)?
Recognizing common 3D shapes (video) | Khan Academy
Learn about 3D shapes! A square pyramid has a square base. A rectangular prism is a box shape with all rectangular sides. A triangular prism has triangle faces on opposite sides. A sphere is …
Volume of triangular prism & cube (video) | Khan Academy
The other types of triangular three-dimensional figures is you might see pyramids. This would be a rectangular pyramid, because it has a rectangular-- or it has a square base, just like that.
Volume of pyramids intuition (video) | Khan Academy
To generalize the formula for triangular (or any) pyramids, use pyramid volume=1/3*base area*height.
Surface area using a net: triangular prism - Khan Academy
Here are the steps to compute the surface area of a triangular prism: 1. Find the areas of each of the three rectangular faces, using the formula for the area of a rectangle: length x width.
Prism and pyramid volumes (practice) | Khan Academy
Find the volumes of right rectangular and triangular prisms and pyramids. Use the volume to find other measurements of prisms and pyramids.
Pythagorean theorem in 3D (video) | Khan Academy
Discover how to find the length of an edge in a 3D shape using the Pythagorean theorem! This fun math lesson explores right pyramids and rectangular prisms, guiding you through solving …
Age structure diagrams (article) | Khan Academy
An age structure diagram for a rapidly growing population is shaped like a pyramid with sides that curve inward. Other terms for this type of growth include expansive and expanding.
Solid geometry vocabulary (article) | Khan Academy
We'll use pyramid-like figure to mean any figure that is like a pyramid, except that its base can be any 2D shape. The most common pyramid-like figure is a cone.