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  1. Khan Academy | Khan Academy

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  2. Shape and form (article) | Elements of art | Khan Academy

    Course: AP®︎/College Art History > Unit 1 Lesson 3: Elements of art Line as an art element Shape and form Color Space Texture

  3. Terms & labels in geometry (video) | Khan Academy

    Understand dimensions and how these elements form shapes and patterns. Learn key geometric terms like colinear points, midpoints, and vertices, and enhance your knowledge of geometry.

  4. Cell parts that maintain structure (article) | Khan Academy

    A cell's functions are often dependent on its shape. For example, nerve cells have branching structures that help relay signals, and many intestinal cells have hair-like extensions that help …

  5. DNA structure (article) | Khan Academy

    A video shows the three-dimensional shape of a DNA double helix. The double helix consists of two DNA strands wound around each other, with their sugar-phosphate backbones on the …

  6. Orders of protein structure - Khan Academy

    To understand how a protein gets its final shape or conformation, we need to understand the four levels of protein structure: primary, secondary, tertiary, and quaternary.

  7. Shape and form (article) | Elements of art | Khan Academy

    All the elements discussed — shape, form, geometric shapes, organic shapes, and the examples given — are important in the study of art and design. They help us understand how artists use …

  8. Molecules and compounds overview - Khan Academy

    The overall shape of the molecule is a pyramid with nitrogen at the vertex and a triangular base formed by the three hydrogen atoms. As you will learn when you study molecular shapes and …

  9. Counting faces and edges of 3D shapes (video) | Khan Academy

    Learn about shapes! Discover how to count faces and edges on 3D figures. We explore a transparent shape with five faces and another shape, a square pyramid, with eight edges and …

  10. Triangles | Geometry (all content) | Math | Khan Academy

    Geometry (all content) 17 units · 180 skills Unit 1 Lines Unit 2 Angles Unit 3 Shapes Unit 4 Triangles Unit 5 Quadrilaterals Unit 6 Coordinate plane