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Classify shapes and solve problems using what we know of the properties of shapes.
Recognizing shapes (video) | Geometry | Khan Academy
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Volume and surface area help us measure the size of 3D objects. We’ll start with the volume and surface area of rectangular prisms. From there, we’ll tackle trickier objects, such as cones and …
Geometry - Khan Academy
Geometric shapes are all around us. The world is built with them. In this series of tutorials and exercises you'll become familiar with Euclidean geometry and terms like scale drawings, parts …
Analyze shapes (practice) | Geometry | Khan Academy
Analyze shapes by counting the number of sides or faces. Skip to main content If you're seeing this message, it means we're having trouble loading external resources on our website.
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Learn to recognize common 3D shapes in this Khan Academy video.
Rotational symmetry of 2D shapes (practice) | Khan Academy
Identify rotational symmetry in figures by determining magnitudes of rotations which map a figure onto itself.
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Area of a trapezoid is found with the formula, A=(a+b)h/2. To find the area of a trapezoid, you need to know the lengths of the two parallel sides (the "bases") and the height. Add the …
Translating shapes (video) | Translations | Khan Academy
In translations, we slide a shape around on a grid. We use the letter "T" to represent translations. We move every point of the shape a certain distance left or right, and up or down, to create a …