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 like a globe. …
Volume of a pyramid or cone - Khan Academy
A cone is a common pyramid-like figure where the base is a circle or other closed curve instead of a polygon. A cone has a curved lateral surface instead of several triangular faces, but in terms of …
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 vertex that has …
Volume of pyramids intuition (video) | Khan Academy
The volume of a pyramid is a fraction of the volume of the rectangular prism that encloses it. We can find out what that fraction is by cutting a prism into several pyramids.
Volume of triangular prism & cube (video) | Khan Academy
This would be a rectangular pyramid, because it has a rectangular-- or it has a square base, just like that. You could also have a triangular pyramid, which it's just literally every side is a triangle.
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.
Volume of prisms and pyramids (practice) | Khan Academy
No matter what shape the base is, if we know the height and the area of the base of prism-like or pyramid-like solids, we can find their volume.
Surface area expressions with nets (practice) | Khan Academy
Determine the expression that finds the total or lateral surface area of triangular and rectangular prisms and pyramids.
Total and lateral surface area using a net rectangular pyramid
Given the net of a rectangular pyramid, let's determine the lateral and total surface area of the figure. The total surface area is the area of all the faces, and the lateral surface area leaves out the base.
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.