Vectors and spaces
Explore vector dot and cross products to solve geometric problems, understand orthogonality, and find areas using a mix of algebra and geometry skills.
200+ videos and assessments
Standards aligned
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VIDEOS

Vector dot product and vector length
Khan Academy
•10th - 12th Grade
•10 Qs

Proving vector dot product properties
Khan Academy
•10th - 12th Grade
•10 Qs

Defining the angle between vectors
Khan Academy
•10th - 12th Grade
•10 Qs

Proof of the Cauchy-Schwarz inequality
Khan Academy
•10th - 12th Grade
•10 Qs

Vector triangle inequality
Khan Academy
•10th - 12th Grade
•10 Qs

Defining a plane in R3 with a point and normal vector
Khan Academy
•9th - 12th Grade
•10 Qs

Cross product introduction
Khan Academy
•9th - 12th Grade
•10 Qs

Proof: Relationship between cross product and sin of angle
Khan Academy
•10th - 13th Grade
•10 Qs

Dot and cross product comparison/intuition
Khan Academy
•9th - 12th Grade
•10 Qs

Normal vector from plane equation
Khan Academy
•10th - 12th Grade
•10 Qs

Vector triple product expansion (very optional)
Khan Academy
•10th - 12th Grade
•10 Qs

Distance between planes
Khan Academy
•10th - 12th Grade
•10 Qs

Point distance to plane
Khan Academy
•9th - 12th Grade
•10 Qs