What is the sum of the interior angles of a $pentagon$?

Find the area of the triangle: $A=30\(\degree\)$, $b=10m$, $B=80\(\degree\)$.

Given triangle QRS with sides $q$ = $5$ units, $r$ = $6$ units, and the included angle $\angle \mathrm{QRS}$ = $60°$, what is the area of triangle QRS?

Which triangle's area can be calculated using the trigonometric area formula $A=\frac{1}{2}absinC$?

A triangle ABC has sides $a$ and $b$ with included angle $C$. If a sector of a circle with radius $r$ and central angle $C$ is drawn such that the triangle is inscribed within the sector and the region outside the triangle but inside the sector is shaded, what is the area of the sector that is not shaded?

Given triangle QRS with sides $q$ and $r$ enclosing angle $S$, what is the formula for the area of triangle QRS?

Which triangle's area can be calculated using the trigonometric area formula $A=\frac{1}{2}absinC$?

Which formula is used to find the area of a triangle when two sides and the included angle are known (SAS case)?

Given triangle DEF with sides $d$ and $e$ and included angle $F$, what is the formula for its area?