If two of the angles are right angles, the two sides would be parallel lines. A right triangle can be an isosceles triangle if the OTHER two angles are equal. So, a right triangle will have angles of 90, 45 and 45 degrees. If the two equal sides are each one unit long, the third side will be equal to the units long.Click to see full answer. In this way, how many right angles does an isosceles triangle have? Answer and Explanation: An isosceles triangle might have no right angles and it might have one right angle. It can?t have more than one right angle.Additionally, which two angles are equal in an isosceles triangle? In an isosceles triangle, there are two base angles and one other angle. The two base angles are equal to each other. So say you have an isosceles triangle, where only two sides of that triangle are equal to each other. And then you have 36 degrees as one of your base angles. Also asked, can an isosceles triangle have a right angle? No, an isosceles triangle does not always have a right angle.What is the formula of isosceles? All Formulas to Find Isosceles Triangle Area Formulas to Find Area of Isosceles Triangle Using length of 2 sides and angle between them A = ½ × b × c × sin(α) Using 2 angles and length between them A = [c2×sin(β)×sin(α)/ 2×sin(2π−α−β)] Area formula for isosceles right triangle A = ½ × a2