Geometry
Explore plane geometry; coordinates and transformations; space and geometry beyond euclid. Concepts and connections are available independently of video coverage.
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Triangle similarity
Similar triangles have equal corresponding angles and proportional corresponding sides.
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Conic sections
Ellipses, parabolas and hyperbolas arise from planar sections of a cone.
Pythagorean theorem
In a right triangle, squared leg lengths sum to the squared hypotenuse length.
Triangle congruence
Congruent triangles have matching sides and angles under a rigid motion.
Angles
An angle measures rotation between rays sharing an endpoint.
Area and volume
Area measures planar regions and volume measures spatial regions in corresponding squared or cubed units.
Knowledge connections
- Triangle congruence · Related · Map context
- Pythagorean theorem · Related · Map context
- Conic sections · Next concept · Map context