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It depends on which of the sides is x.

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11y ago
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Q: What is the length of side x in a 21 and 7 right triangle?
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What is the length of altitude drawn to the hypotenuse of a triangle with given sides of 7 and 21?

If it's a right angle triangle then use Pythagoras' theorem to find the 3rd side


What is the length of an equilateral triangle if the perimeter is 12x plus 21?

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In a triangle whose 2 legs are 21 cm and 5 cm - what are the possible lengths for the third leg?

It seems that we have a triangle whose length sides are 21 cm and 5 cm. So that the third side would have a length which can be smaller than 21 + 5 = 26 cm, and bigger than 21 - 5 = 19 cm (19 cm < PR < 26 cm).Thus, all the numbers between 19 and 26 could be the length of the third side of the given triangle.


Is a triangle with sides of length 6 ft 21 ft 23 ft a right triangle explain why?

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