all internal angles in a triangle should add up to 180.
If you already have an angle of 63 degrees and a right angle (90 degrees) the the other angle must be 27 degrees.
180 - (63 + 90) equals 27
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No, a right angled triangle needs an angle that is 90 degrees. Here, all the angles don't even make up 180 degrees.
Isosceles right angled triangle, as the remaining angle must be 90o.
Because 1 angle will measure 90 degrees and the other 2 angles will each measure 45 degrees
One angle is of course 90o, the other two make up the remaining 90o in any combination.
45 degrees. they have to be the same angle, because they are opposite equal lengths, and when added together they must equal 90, so as to make the total of the angles 180.