An obtuse angled triangle.
A right angle triangle and the third angle measures 60 degrees
An obtuse triangle.
A right triangle because the 90 degree angle creates a corner.
It is a right angle triangle because it has a 90 degree angle and the 3 angles add up to 180 degrees.
It will be an obtuse or an isosceles triangle which would look like a straight line
45 degrees is an angle, not a triangle.A triangle containing an angle of 45 degrees can be any kind of triangle except an equilateral triangle.
A right-angle triangle.
It is a right angle triangle because the 3rd angle is 90 degrees
The third angle must be 30 degrees so it is an obtuse triangle
sumplementary
Acute
An obtuse angle