Question

please answer fast with proper solution . for class 7

Answer 1

Given that the angle ABC is congruent to triangle DBF .

Then the questionnaire has asked that If Angle ABD is congruent to Angle CBF or not .

The required Answer is :

Yes they are congruent.

Justification :

Because when we add Angle DBC to both sides , that is to the Left Hand Side and the Right Hand Side then we get Angle ABD is congruent to Angle CBF :

Angle ABC + Angle DBC ≈ Angle DBF + Angle DBC

= Angle ABD ≈ Angle CBF

[If equals are added to equals then the sum are also equal]

Here ≈ stands for congruency