Question

If $\Delta RTW\cong \Delta ABC$, what is the measure of $\angle T$ in the given figure ?

• A. ${12}^o$
• B. ${72}^o$
• C. ${80}^o$
• D. ${90}^o$

Answer 1

The correct option is D ${90}^o$

In $△ABC$
$\angle A+\angle B+\angle C=180$
$\angle 72+\angle B+\angle 18=180$
$\angle B=180-90=90$
As $△RTW\cong △ABC$
So, $\angle B=\angle T=90$
Answer (D) $90$