Answer:
0
Step-by-step explanation:
1/2 * 2 is 1. 1 - 1 is 0
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Could we have a photo of the question please
SO you know that triangles add up to 180. A right angle equals 90 so 180-90=90. And an isosceles triangle means that 2 angles are congruent. SO 90/2 = 45. The measure of the 2 acute angles are 45