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How do you find the missing length of a triangle?
You use the Pythagoras Theorem if it is a right-angled triangle. a squared + b squared = h (longest side, diagonal) squared, then square root h to find the longest side. if it is not a right angled triangle, then use the Sine or Cosine rule. Sine rule for: two angles and any one side or two sides and an angle that is not in between the sides. Cosine rule for: all three sides (but then you do not need to find a missing side) or two sides and an angle that is in between.
Can you find the length of the sides of a right triangle knowing only the hypotenuse?
No.
How can you find a missing side or angle of a right triangle?
180 minus two known angle = missing angle. Use Pythagoras' theorem to find its missing side.
How do you find perimeter of a right angle triangle?
add all of the sides together
How do you find the missing side of a 45 45 90 triangle?
Since 2 of it's angles are equal (45 degrees), you have an isoceles triangle. Hence, two of its sides are the same. Since the other angle is 90, you have a right angle triangle. This means that if you're missing the hypotenuse, you can use the Pythagorean theorem to find it. H^2 = A^2 + B^2 Where H is the length of the hypotenuse, and A and B are the lengths of the other 2 sides. (Here, A = B).
