Exterior angle theorem : If a side of a triangle is produced; the exterior angle so formed is equal to the sum of the two interior opposite angles.

Theorem 6.8 : If a side of a triangle is produced, then the exterior angle so formed is equal to the sum of the two interior opposite angles.

THEOREM (Exterior Angle Property of a Triangle): If a side of a triangle is produced the exterior angle so formed is equal to the sum of two interior opposite angles.

27.Prove that an exterior angle of a triangle is equal to the sum of its interior opposite angles.

State exterior angle theorem

If one side of a cyclic quadrilateral is produced; then the exterior angle is equal to the interior opposite angle.

If one side of a cyclic quadrilateral is produced,then the exterior angle is equal to the interior opposite angle.

The measure of any exterior angle of a triangle is equal to the sum of the measures of its two interior opposite angles

If a side of the cyclic quadrlateral is produced ; then the external angle is equal to the interior opposite angles.

Which of the following statements are true (T) and which are false (F): Sum of the three angles of a triangle is 180^0 A triangle can have two right angles. All the angles of a triangle can be less than 60^0 All the angles of a triangle can be greater than 60^0 All the angles of a triangle can be equal to 60^0 A triangle can have two obtuse angles. A triangle can have at most one obtuse angles. In one angle of a triangle is obtuse, then it cannot be a right angled triangle. An exterior angle of a triangle is less than either of its interior opposite angles. An exterior angle of a triangle is equal to the sum of the two interior opposite angles. An exterior angle of a triangle is greater than the opposite interior angles

Exterior angle of a triangle is always ____ then either of its interior opposite angles .