Sum of angles is 180, not 90
...a right triangle.
exterior angle theorem
In any triangle exterior angle plus interior angles = 180 degrees
The shape is a triangle.
The sum of the angles should equal 180
Sum of angles is 180, not 90
77. The sum of the three angles in a triangle equal the sum of 180 degrees
...a right triangle.
It's not. It's 180o.
170Apex(:
It is 1/2 of length x width
The sum of the interior angles of a triangle on a plane is always 180 degrees.
Exterior angle.
In a triangle, the sum of the angles is always 180 degrees. This is known as the angle sum property of triangles. Additionally, the largest angle in a triangle is always opposite the longest side, and the smallest angle is opposite the shortest side.
exterior angle theorem
In any triangle exterior angle plus interior angles = 180 degrees