3 years ago

Math day!,which 2 boxes

Mathematics

1 answer:

Dima020 [189]3 years ago

4 0

Answer:

A and D

Step-by-step explanation:

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we know,

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To proof

Formula

Area of Triangle

$= \frac{1}{2}\times( {x_1(y_{2}-y_{3}) +x_{2}(y_{3} - y_{1})+x_{3}(y_{1}-y_{2})})$

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