Angle sum property of a triangle

.The sum of the interior angle of a triangle is -

• 90°

• 180°

• 120

• 100°

.The two angles of a triangle are 70° and 30° .The third angle is ---

• 70°

• 100°

• 180°

• 80°

In triangle PQR ,if <P= 40° and <Q=50°,then the triangle is-

• acute angled triangle

• right angled triangle

• obtuse angled triangle

Each angle of an equilateral triangle measures

• 60°

• 90°

• 30°

can a triangle have three measures are 60°,80°,40°

• yes

• no