Question

Given is a quadrilateral ABCD in which $\Delta ADC\cong \Delta ABC$. Which congruency criteria is used?

• A. ASA
• B. SAS
• C. SSA
• D. SSS

Answer 1

The correct option is A

ASA

$\angle DAC=\angle BAC;\angle DCA=\angle BCA;AC=AC$ (Common side)

Hence, using ASA congruence criteria, we can say that $\Delta ADC\cong \Delta ABC$.