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Q: What combinations of three side lengths can be used to make a triangle?

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Yes, the three given lengths will form a triangle. Three lengths can make a triangle if, and only if, the sum of the two shorter lengths is greater than the longest length. The two shorter lengths are 56 ft and 16 ft with a sum of 56 ft + 16 ft = 72 ft 72 ft is greater than 65 ft so 56 ft, 65 ft and 16 ft will make a triangle.

Hypotenuse,Adjacent and opposite in a triangle and these sides can be worked out

No

No

Yes, an Isosceles.

Related questions

-- Make sure you have the lengths of all three sides -- Add up the lengths of all three sides to get the perimeter of the triangle.

three

Yes, the three given lengths will form a triangle. Three lengths can make a triangle if, and only if, the sum of the two shorter lengths is greater than the longest length. The two shorter lengths are 56 ft and 16 ft with a sum of 56 ft + 16 ft = 72 ft 72 ft is greater than 65 ft so 56 ft, 65 ft and 16 ft will make a triangle.

Hypotenuse,Adjacent and opposite in a triangle and these sides can be worked out

If you mean side lengths of 5, 4 and 1 then it is not possible to construct any triangle from the given dimensions.

The largest angle is 180° - that is if you consider a straight line a triangle. The three lengths do not make a triangle since 5.8 cm + 8.3 cm = 14.1 cm In other words you have a line segment with two line segments on it and the angle in a straight line is 180°

No

No

No. If you have three pencils of different lengths, or three straws, or something similar, try putting them together with each one touching one end of another to make a closed plane figure. The only way to join them to form a polygon is to make a triangle.

Yes, an Isosceles.

By Pythagoras's theorem, to make a right angled triangle, 142 + 152 should be 212 But 142 + 152 = 196 + 225 = 421 whereas 212 = 441 So these three sides cannot make a right angled triangle.

A triangle only has three sides. If you put three sticks together, you can make a triangle. If you had four sticks, you cannot make a triangle. That is why only three sticks are needed.