That will be an equilateral triangle.
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an equilateral triangle
equilateral
No, in fact no triangle can have two right angles. The sum of all interior angles of any triangle is 180 degrees. All triangles must have three angles. A right angle is 90 degrees. So if a triangle has two ninety degree angles, there would be no third angle. An acute triangle has all three angles less than 90 degrees. The most common acute triangle is the equilateral 60-60-60 degree triangle.
The angles add up to 180 degrees, but the angles are 60 degrees.
an equilateral triangle has three congruent triangles (each one is 60 degrees)