A right angle triangle has a 90 degree angle and two acute angles which all add up to 180 degrees
a triangle a triangle
A right triangle.
Such a three sided triangle with two right angles is impossible.
A three sided polygon (aka triangle) with one of it's angles being 90 degrees.
Providing it has no right angles then it is a scalene triangle.
EQUILATERAL triangle. Two sides the same length , and two angles equal is ISOSCELES Triangle A triangle with a Right-Angle is a RIGHT -ANGLED Triangle No equal sides/angles is a SCALENE triangle.
It looks like a square with a triangle on top of it.
A triangle has no right angles when it is not a right angle triangle as for example as in the case of an equilateral triangle that has 3 equal 60 degree angles.
There are no obtuse angles in a right triangle. A right triangle consists of one right angle and two acute angles.
The main differences are. A triangle is three sided while a rectangle is four sided. The corners of a triangle can be any angle. All corners of a rectangle must be 90 degrees. This means that the left and right sides are parallel, and the top and bottom sides are parallel.
A triangle can never have three right angles
A triangle.