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Calculate the sum of the squares of the two shorter sides. If this is less than the square of the remaining, third, side then the triangle is obtuse.
There are three possibilities - let the three sides of the triangle be A, B and C with C the longest side (that is C ≥ A and C ≥ B). Then, if:
- A2 + B2 > C2 the triangle is acute
- A2 + B2 = C2 the triangle is right angled
- A2 + B2 < C2 the triangle is obtuse
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What are the lengths of the sides of an obtuse triangle?
The 3 sides have different lengths
What is a shape with no congruent sides and one of it's angles is obtuse?
An obtuse scalene triangle would fit the given description
Can you draw a scalene obtuse triangle?
Yes. Scalene simply means that a triangle's sides are all different lengths. Obtuse means that a triangle has an obtuse angle. Therefore, you can have an obtuse scalene triangle.
What is the difference between an scalene right triangle and a scalene obtuse triangle?
A scalene triangle is a triangle in which all three sides have different lengths. The difference between a scalene right triangle and a scalene obtuse triangle is that in the first one, we can find the measure length of the third side when we know the lengths of the two other sides, and in the second one we cannot.
How can you tell if the given lengths can be the sides of a triangle?
you can fine the perimeter
