Question

please solve it correctly (iii) and(iv) number 5​ it is urgent

Answer 1

In figure (iii)

3x + (180° -7x ) = 100°

or 180° - 4x = 100°

=> 4x = 80°

=> x = 20°

Consider attached figure for figure (iv)


Note :- Property used is , Sum of two interior Ange is equal to the exterior angle of third angle.

Answer 2

to hit 1b is my another id