A right angle triangle providing that the dimensions given are all of the same units of measurement
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The third angle must be 30 degrees so it is an obtuse triangle
If it has 50 sides, it ain't triangular. "Triangle" means 3 sides.If it has 50 sides, it ain't triangular. "Triangle" means 3 sides.If it has 50 sides, it ain't triangular. "Triangle" means 3 sides.If it has 50 sides, it ain't triangular. "Triangle" means 3 sides.
It is an isosceles triangle because the third angle must measure 50 degrees
130 degrees
Since a right triangle has 180 degree angles in it, you know 2 angles already. One is the 90 degree angle, since the triangle is a right one. The other is 40 degrees, as in your statement. 90 plus 40 is 130. 50 degrees is the missing angle since 50 + 40+ 90 equal 180 degrees. Hopefully that helped you.