A square has a side length of 20cm. If a diagonal is drawn, what is the length of the diagonal? Give the exact value (radical form), not an approximation. Use special triangles.

Question

anonymous · Answer

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anonymous · Answer

uhm, elaborate please?

anonymous · Answer

A square is simply a  combination of two 45-45-90 triangles with legs 20

anonymous · Answer

Pythagorean theorem comes to your rescue.

anonymous · Answer

Thus the digaonal is in effect the hypothenuse of either triangle

anonymous · Answer

As foolish for math said, we simply apply the pyhthagorean theorme

anonymous · Answer

Baha, I understand now thank you very much.