If the side `B C` of ` A B C` is produced on both sides, then write the difference between the sum of the exterior angles so formed and `/_A`.

The side B C of a A B C is produced on both sides. Show that the sum of the exterior angles so formed is greater than /_A by two right angles.

The side B C of a A B C is produced on both sides. Show that the sum of the exterior angles so formed is greater than /_A by two right angles.

The side B C of a triangle A B C is produced on both sides. Show that the sum of the exterior angles so formed is greater than /_A by two right angles.

If the sides of a triangle are produced in order, then the sum of the three exterior angles so formed is (a) 90^0\ (b) 180^0 (c) 270^0 (d) 360^0

If the base of an isosceles triangle is produced on both sides, prove that the exterior angles so formed are equal to each other.

theorem 1 (Exterior angle sum property) if the sides of quadrilateral are produced in order the sum of four exterior angles so formed is 360^@ .

(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. GIVEN : A triangle A B C,D is a point of B C produced, forming exterior angle /_4. TO PROVE : /_4=/_1+/_2 i.e. , /_A C D=/_C A B+/_C B Adot

The base B C of triangle A B C is produced both ways and the measure of exterior angles formed are 94^0a n d\ 126^0dot Then /_B A C (a) 94^0 (b) 54^0 (c) 40^0 (d) 44^0

If the difference between an interior angle of a regular polygon of (n + 1) sides and an interior angle of a regular polygon of n sides is 4^(@) , find the value of n. Also, state the difference between their exterior angles.

If two sides a, b and the angle A be such that the sum of two values of the third side is