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Balancing chemical equations

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471
14:27

Overview of KhanAcademy.org

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596
05:25

Perimeter and area of a non-standard polygon

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501
03:02

Perimeter of a parallelogram

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487
01:19

Area of a kite

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671
03:48

Area of a trapezoid

Khan Academy
521
04:47

Area of a parallelogram

Khan Academy
501
05:41

Quadrilateral properties

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509
05:06

Quadrilateral overview

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465
08:23

Part 2 of proof of Heron's formula

Khan Academy
532
12:07

Part 1 of proof of Heron's formula

Khan Academy
579
10:59

Heron's formula

Khan Academy
526
04:42

Area of Koch snowflake (part 2) - advanced

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539
06:31

Area of Koch snowflake (part 1) - advanced

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617
12:29

Area of an equilateral triangle

Khan Academy
498
03:42

Koch snowflake fractal

Khan Academy
517
09:10

Triangle inequality theorem

Khan Academy
497
05:51

Challenging perimeter problem

Khan Academy
587
09:55

Area of shaded region made from equilateral triangles

Khan Academy
545
05:36

Area of an equilateral triangle

Khan Academy
585
03:42