Question

For finding AB and BC with the help of information given in the figure. complete​

Answer 1

Step-by-step explanation:

AB = BC [Given]  ∴ ∠BAC = ∠BCA [Isosceles triangle theorem]  Let ∠BAC = ∠BCA = x (i)  In ∆ABC, ∠A + ∠B + ∠C = 180° [Sum of the measures of the angles of a triangle is 180°]  ∴ x + 90° + x = 180° [From (i)]  ∴ 2x = 90°  ∴ x = 90°/2 [From (i)] ∴ x = 45°