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Solid geometry vocabulary (article) | Khan Academy
Lesson 1: 2D vs. 3D objects. Getting ready for solid geometry. Solid geometry vocabulary. Dilating in 3D. Slicing a rectangular pyramid. Cross sections of 3D objects (basic) Ways to cross-section a cube. Cross sections of 3D objects. Rotating 2D shapes in 3D. Rotate 2D shapes in 3D. Math > High school geometry >
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. A cylinder looks like a can with circular faces on top and bottom. Shapes are fun!
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Learn how to measure the size of 3D objects with volume and surface area, from rectangular prisms to cones and spheres.
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 for unknown lengths by applying the theorem multiple times.
High school geometry - Khan Academy
Rotate 2D shapes in 3D; Solid geometry: Quiz 1; Apply Cavalieri's principle; Use related volumes; Volume of prisms and pyramids; Solid geometry: Quiz 2; Volume and surface area of cylinders; Apply volume of solids; Density word problems; Solid geometry: Quiz 3; Solid geometry: Unit test; Course challenge.
Khan Academy
Rotate 2D shapes in 3D; Solid geometry: Quiz 1; Apply Cavalieri's principle; Use related volumes; Volume of prisms and pyramids; Solid geometry: Quiz 2; Volume and surface area of cylinders; Apply volume of solids; Density word problems; Solid geometry: Quiz 3; Solid geometry: Unit test;
Slicing a rectangular pyramid (видео) | Хан академиясы
What happens when you slice vertically into a rectangular pyramid? What kind of geometric shape results? Видео авторы: Сал Хан.
Slicing a rectangular pyramid (video) | Khan Academy
What happens when you slice vertically into a rectangular pyramid? What kind of geometric shape results? Created by Sal Khan.