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Balancing chemical equations

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541
14:27

Overview of KhanAcademy.org

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668
05:25

Perimeter and area of a non-standard polygon

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566
03:02

Perimeter of a parallelogram

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558
01:19

Area of a kite

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739
03:48

Area of a trapezoid

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584
04:47

Area of a parallelogram

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568
05:41

Quadrilateral properties

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575
05:06

Quadrilateral overview

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532
08:23

Part 2 of proof of Heron's formula

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598
12:07

Part 1 of proof of Heron's formula

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646
10:59

Heron's formula

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596
04:42

Area of Koch snowflake (part 2) - advanced

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604
06:31

Area of Koch snowflake (part 1) - advanced

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693
12:29

Area of an equilateral triangle

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569
03:42

Koch snowflake fractal

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580
09:10

Triangle inequality theorem

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568
05:51

Challenging perimeter problem

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651
09:55

Area of shaded region made from equilateral triangles

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612
05:36

Area of an equilateral triangle

Khan Academy
656
03:42