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Part 2 of proof of Heron's formula

Showing that the expression in part 1 is identical to Heron's Formula

Khan Academy
Heron's formula
601
12:07

Part 1 of proof of Heron's formula

Part 1 of the proof of Heron's Formula

Khan Academy
Heron's formula
651
10:59

Heron's formula

Using Heron's Formula to determine the area of a triangle while only knowing the lengths of the sides

Khan Academy
Heron's formula
598
04:42