Because the 3 interior angles of a triangle add up to 180 degrees no more and no less but a right angle plus an obtuse angle would be over 180 degrees.
No. It is not possible to make a equilateral triangle that is obtuse.
Yes it is possible to have a obtuse scalene triangle.
Yes, its not possible to have a "right obtuse triangle"
No
no
no
its only possible to have one obtuse angle.
The definition of an obtuse triangle is a triangle with an angle exceeding 90o. A scalene triangle is a triangle in which no two sides are of equal length. Therefore, it is possible that an obtuse triangle is a scalene triangle. However, it is also possible for an obtuse triangle to be an isosceles, in which two sides are of equal length. On a final note, it is impossible for an obtuse triangle to be an equilateral; equilateral triangles always have angles of 60o.
yes
yes
no
No