A right angle triangle.
A right triangle, that is, one with one angle of 90 degrees.
we know that a triangle is 90 degrees by measuring its length or it can be known as right triangle which measures 90 degrees.
They sum to 90 degrees so they are complementary.
A right angles triangle, as one of the angles in the triangle is 90 degrees.
The question "What are the classifications of a triangle" is answered elsewhere. The angles in a triangle can be either an obtuse >90 degrees, an acute <90 degrees, or a rectal = 90 degrees
It has 180 degrees, but one angle of the triangle has to be 90 degrees
A triangle with one angle over 90 degrees is an obtuse triangle.
Acute Triangle - All of the angles are under 90 degrees. Right Triangle - One angle is 90 degrees Obtuse Triangle - A triangle that has one angle greater than 90 degrees
Acute Triangle - All of the angles are under 90 degrees. Right Triangle - One angle is 90 degrees Obtuse Triangle - A triangle that has one angle greater than 90 degrees.
Any triangle that has an angle measuring 90 degrees is a right triangle.
A right-angle triangle
this is called an obtuse triangle the triangle that has one angle 90 degrees is called a right traingle a triangle that has 3 angles less than 90 degrees is called an acute triangle