17 inches
This is a scalene triangle as it has no equal sides or angles. It is not a right angle triangle.
true
That would be an isosceles triangle if two sides are the same length.
that's not a triangle
Yes and it will be in the form of an isosceles triangle having two equal sides.
Sum of any two sides of a triangle is greater than third side. 3 + 4 = 7 < 8, but 7 is less than 8. So, it is not possible to form triangle with sides of length 3, 4 and 7 units.
17 inches
No. Any two sides of a triangle MUST add up to more than the third. 8+7 = 15, not > 15.
An heptagon has 7 sides and a triangle has 3 sides
This is a scalene triangle as it has no equal sides or angles. It is not a right angle triangle.
true
That would be an isosceles triangle if two sides are the same length.
Yes they could.
that's not a triangle
Then it is a scalene triangle
Those segments can form a triangle because the two smallest sides, 7 and 8, add together to make 15, which is greater than the longest side, 12.