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Answer:
90°
Step-by-step explanation:
so at intersection it will be 360°
by drawing diagonals square will be divided into 4 triangles
all 4 triangles are congruent
so angles at center will be equal
sum of 4 angles are 360 and 4 angles are equal
so4x=360
x=360/4
x=90°
In sqaure, all sides are equal so all diagonals are also equal. Moreover, diagonals intersect each other @90°. so m<AOB= 90°. Thus , 90° is the correct answer