angle PRT is an exterior angle of Delta PQR. | vedclass

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(C) According to the Exterior Angle Theorem of a triangle,the measure of an exterior angle is equal to the sum of the two interior opposite angles.In

Vedclass · Accepted Answer

$120$

Vedclass · Answer

(C) According to the Exterior Angle Theorem of a triangle,the measure of an exterior angle is equal to the sum of the two interior opposite angles.In $\Delta PQR$,$\angle PRT$ is the exterior angle at vertex $R$.The interior opposite angles are $\angle P$ and $\angle Q$.Therefore,$\angle PRT = \angle P + \angle Q$.Given $\angle P = 70^{\circ}$ and $\angle Q = 50^{\circ}$.$\angle PRT = 70^{\circ} + 50^{\circ} = 120^{\circ}$.

$\angle PRT$ is an exterior angle of $\Delta PQR$. If $\angle P = 70^{\circ}$ and $\angle Q = 50^{\circ}$,then $\angle PRT = \ldots$ (in $^{\circ}$)

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