Question

If ∠YTB ≡∠YBT and ∠BOY≡ ∠TRY,
prove that ∆BOY ≡ ∆TRY

Answer 1

We know that ∠O = ∠R

and ∠TYR will be equal to ∠BYO for sure

and the angle sum of a triangle says that sume of all angles of a triangle are same, the ∠OBY = ∠RTY

Hence, 3 angles are equal, then using the AA congurence, we can say that ∆BOY is congurent to ∆TRY