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 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 …
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 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 …
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.