An obtuse triangle.
A triangle that has an angle greater than 90o is an obtuse triangle.
A triangle in which none of the angles are greater than 90 degrees is called an "acute triangle." In an acute triangle, all three angles are less than 90 degrees, giving it a sharp appearance. This classification is distinct from right triangles, which contain one 90-degree angle, and obtuse triangles, which have one angle greater than 90 degrees.
An acute angled scalene triangle.
90 degrees
It is a right angle triangle
A triangle that has an angle greater than 90o is an obtuse triangle.
Obtuse triangle: a triangle with one angle greater than 90 degrees.
The third angle is 180-(60+70) = (180 - 130) = 50degrees.-- All of its angles aren't equal, so it's not an equilateral triangle.-- No two of its angles are equal, so it's not an isosceles triangle.-- No angle in it is 90 degrees, so it's not a right triangle.-- No angle in it is greater than 90 degrees, so it's not an obtuse triangle.--> It's an acute, scalene triangle.
A triangle in which none of the angles are greater than 90 degrees is called an "acute triangle." In an acute triangle, all three angles are less than 90 degrees, giving it a sharp appearance. This classification is distinct from right triangles, which contain one 90-degree angle, and obtuse triangles, which have one angle greater than 90 degrees.
Obtuse-angled triangle
An acute angled scalene triangle.
90 degrees
It is a right angle triangle
A triangle on a concave surface.
An angle greater than 90 but less than 180 degrees is an obtuse angle.
The name of the angle you are looking for is an obtuse angle. For review here are all the names and classifications:Any angle less than 90 degrees is an acute angle.Any angle equal to 90 degrees is a right angle.Any angle greater than 90 degrees but less than 180 degrees is an obtuse angle.Any angle equal to 180 degrees is a straight angle.Any angle greater than 180 degrees but less than 360 degrees is called a reflex angle.
A reflex angle.