Respuesta :
Answer:
In the triangle ABC, A is the right angle; the side "a", opposite to the angle A, is the hypotenuse and side "b" is the leg.
√ (√2)²-1² = √2-1= √1= 1
according to the Pythagorean theorem.
It means that you have the right angled triangle with congruent legs; thus the triangle is isosceles.
Hence, the angles at the base (at the hypotenuse) are congruent and each is equal to 180°-90°/2 = 45°
Answer. The measure of the angle B is 45°.
Step-by-step explanation:
