D) bC=* 2) Fill in the following blanks with respect to the figure in the
Question 1 to prove exterior angle theorem.
(1) We know that the sum of angles in a triangle is 180 degrees. So
a+c= degrees
(ii) b and y form a linear pair. Thus,
degrees.
(ii) From () and (0)
a+=
(iv) Similarly, we can prove that
Hence the exterior angle theorem is proved.
and