Question : $\angle A, \angle B$ and $\angle C$ are three angles of a triangle. If $\angle A- \angle B=15^{\circ}, \angle B - \angle C=30^{\circ}$, then $\angle A, \angle B$ and $\angle C$ are:

Option 1: $80^{\circ},60^{\circ},$ and $40^{\circ}$

Option 2: $70^{\circ},50^{\circ},$ and $60^{\circ}$

Option 3: $80^{\circ},65^{\circ},$ and $35^{\circ}$

Option 4: $80^{\circ},55^{\circ},$ and $45^{\circ}$

Question : In $\triangle A B C, \angle A=66^{\circ}$ and $\angle B=50^{\circ}$. If the bisectors of $\angle B$ and $\angle C$ meet at P, then, $\angle B P C-\angle P C A=$?

Option 1: $93^\circ$

Option 2: $91^\circ$

Option 3: $83^\circ$

Option 4: $81^\circ$

Question : In a $\triangle A B C, \angle B+\angle C=110^{\circ}$, then find the measure of $\angle A$.

Option 1: 90°

Option 2: 70°

Option 3: 80°

Option 4: 60°

Question : If the angle of a right-angled triangle is 35°, then find the other angles.

Option 1: 90° and 75°

Option 2: 90° and 35°

Option 3: 90° and 55°

Option 4: 90° and 45°

Question : An exterior angle of a triangle is 115° and one of the interior opposite angles is 45°. The other two angles are:

Option 1: 65° and 70°

Option 2: 60° and 75°

Option 3: 45° and 90°

Option 4: 50° and 85°