Which congruence criterion do you use in the following? Given : $\mathrm{AC}=\mathrm{DF}, \mathrm{AB}=\mathrm{DE}, \mathrm{BC}=\mathrm{EF}.$ So, $∆\mathrm{ABC}\cong ∆\mathrm{DEF}$.

 You want to establish $∆\mathrm{DEF}\cong ∆\mathrm{MNP}$, using the $\mathrm{ASA}$ congruence rule. You are given that $\angle \mathrm{D}=\angle \mathrm{M}$ and $\angle \mathrm{F}=\angle \mathrm{P}$. What information is needed to establish the congruence?

Which congruence criterion do you use in the following? Given : $\mathrm{EB}=\mathrm{BD}, \mathrm{AE}=\mathrm{CB}, \angle \mathrm{A}=\angle \mathrm{C}=90°$ So,

Which congruence criterion will you use in the following? 

Which congruence criterion will you use in the following? 

Which congruence criterion will you use in the following? 

Which congruence criterion will you use in the following? 

In the given figure, If $\mathrm{AB}$ and $\mathrm{CD}$ bisect each other at $\mathrm{O}$, then $∆\mathrm{AOC}$ is congruent to

 In the given figure, $\mathrm{BD}$ and $\mathrm{CE}$ are the altitudes of triangle $\mathrm{ABC}$ such that$\mathrm{BD}=\mathrm{CE}$, then $∆\mathrm{CBD}$ is congruent to