In Fig. 10.136, AB ⊥ BE and FE ⊥ BE. If BC=DE and AB=EF, then Δ ABD is congruent to

In Fig. 10.135, the measure of ∠B’AC’ is

If ABC and DEF are two triangles such that Δ ABC≅ Δ FDE and AB =5 cm, ∠B = 40° and ∠A =80°, Then, which of the following is true?

ABC, is an isosceles triangle such that AB=AC and AD is the median to base BC. Then, ∠BAD=

In Fig. 10.138, if AE||DC and AB=AC, the value of ∠ABD is