Question

find the measure of each of the two equal angles of an isosceles right Triangle​

Answer 1

if the isosceles triangle is a right angled triangle
then one angle be 90°
by angle sum property
90+2x=180
2x=180-90
x=90/2
x=45
each angle =45°

Answer 2

Answer-->
In an isoceles triangle, two angles are equal (right angle formula is given after this one)
that means
2x+y=180 degress
2x=180-y
x= 180-y/2
x is the angle that is equal. since both gles are equal, so it is written as x+x that means 2x. y denotes the 3rd angle.
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If right triangle,
one angle is 90*
2x+90*=180*
2x=180-90*
2x=90*
x=45*
The equal angles measure 45* each