Jump to key moments of Khan Academy Math Geometry Formulas

9:13
From 0:00Introduction to Parallel and Perpendicular Lines
Equations of parallel and perpendicular lines | Analytic geometry | Geometry | Kha…
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8:25
From 0:00Introduction to Perimeter and Area
Perimeter and area: the basics | Perimeter, area, and volume | Geometry | Khan Acad…
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6:49
From 0:00Introduction to Rays and Angles
Angle basics | Angles and intersecting lines | Geometry | Khan Academy
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9:38
From 06:14Applying the Formula
Formula for a finite geometric series | Sequences, series and induction | Precalc…
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10:23
From 0:00Introduction of Triangle area proofs | Perimeter, area, and volume | Geometry | Khan Academy
Triangle area proofs | Perimeter, area, and volume | Geometry | Khan Academy
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7:07
From 0:00Introduction to Parallel Lines
Angles formed by parallel lines and transversals | Geometry | Khan Academy
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1:36
From 01:00Applying the Formula
Using explicit formulas of geometric sequences | Mathematics I | High School …
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12:58
From 0:00Introduction to Geometry
Basic geometry: language and labels | Introduction to Euclidean geometry | Geo…
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10:46
From 0:00Introduction to Pythagorean Theorem
The Pythagorean theorem intro | Right triangles and trigonometry | Geometry | K…
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5:29
From 0:00Introduction to Area of Rectangles
Area of triangles intuition | Algebra I | High School Math | Khan Academy
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Perimeter and area: the basics | Perimeter, area, and volume | Geometry | Khan Academy
8:25
Perimeter and area: the basics | Perimeter, area, and volume | Geome…
2.1M viewsSep 30, 2011
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Equations of parallel and perpendicular lines | Analytic geometry | Geometry | Khan Academy
9:13
Equations of parallel and perpendicular lines | Analytic geomet…
824.6K viewsApr 6, 2010
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Angle basics | Angles and intersecting lines | Geometry | Khan Academy
6:49
Angle basics | Angles and intersecting lines | Geometry | Khan Academy
1.4M viewsSep 21, 2011
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Triangle area proofs | Perimeter, area, and volume | Geometry | Khan Academy
10:23
Triangle area proofs | Perimeter, area, and volume | Geometry | Khan Acade…
525.3K viewsSep 30, 2011
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Formula for a finite geometric series | Sequences, series and induction | Precalculus | Khan Academy
9:38
Formula for a finite geometric series | Sequences, series and induction | Pr…
286.5K viewsNov 8, 2013
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Angles formed by parallel lines and transversals | Geometry | Khan Academy
7:07
Angles formed by parallel lines and transversals | Geometry | Khan Acad…
1.2M viewsSep 21, 2011
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Basic geometry: language and labels | Introduction to Euclidean geometry | Geometry | Khan Academy
12:58
Basic geometry: language and labels | Introduction to Euclidean geometry | …
1.8M viewsFeb 28, 2012
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10:46
The Pythagorean theorem intro | Right triangles and trigonometry | Geometr…
3M viewsAug 9, 2010
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1:36
Using explicit formulas of geometric sequences | Mathematics I | High Sc…
153.1K viewsMar 2, 2016
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5:29
Area of triangles intuition | Algebra I | High School Math | Khan Academy
990.1K viewsSep 4, 2015
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8:20
Two-variable linear equations and their graphs | Algebra I | Khan Acade…
956.9K viewsAug 6, 2015
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13:10
Graphs of linear equations | Linear equations and functions | 8th grade | …
1.7M viewsApr 3, 2010
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11:22
Introduction to the coordinate plane | Introduction to algebra | Algebra I | K…
1.5M viewsFeb 15, 2012
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16:32
How to use the quadratic formula | Polynomial and rational functions | Al…
2.1M viewsApr 12, 2010
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9:15
Introduction to the quadratic equation | Quadratic equations | Algebra I | Kh…
1.5M viewsJan 28, 2007
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6:18
Slope from equation | Mathematics I | High School Math | Khan Academy
135.6K viewsMar 27, 2017
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8:53
Introduction to solving an equation with variables on both sides | Algebr…
2.7M viewsSep 15, 2010
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8:41
Solving a more complicated equation | Linear equations | Algebra I | Khan Ac…
2M viewsSep 15, 2010
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7:28
Algebra: Linear equations 1 | Linear equations | Algebra I | Khan Academy
2.9M viewsNov 19, 2006
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7:16
Derivative as a concept | Derivatives introduction | AP Calculus AB | Khan …
1.3M viewsJul 19, 2017
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6:22
Solving a quadratic equation by factoring | Algebra II | Khan Academy
2M viewsJun 23, 2010
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10:41
Absolute value equations | Linear equations | Algebra I | Khan Academy
1.4M viewsApr 7, 2010
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5:12
Solving two-step equations | Linear equations | Algebra I | Khan Academy
918.1K viewsJul 27, 2012
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12:44
Solving systems of equations by elimination | Algebra Basics | Khan A…
1.9M viewsApr 8, 2010
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2:09
How to solve one-step equations | Linear equations | Algebra I | Khan Ac…
1.1M viewsSep 11, 2012
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3:51
Identifying the constant of proportionality from equation | 7th gr…
175.9K viewsAug 24, 2018
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7:34
Quadratic formula (proof) | Quadratic equations | Algebra I | Khan Academy
324.7K viewsJun 18, 2008
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9:40
Intro to 30-60-90 triangles | Right triangles and trigonometry | Geometr…
580.3K viewsMay 16, 2007
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5:53
Pythagorean theorem and radii of circles | Circles | Geometry | Khan Ac…
57.3K viewsDec 9, 2013
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12:08
Part 2 of proof of Heron's formula | Perimeter, area, and volume | Geome…
103.5K viewsMar 18, 2010
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