Q 7

Asked by Rayeesa | 6th Jun, 2018, 02:00: PM

Expert Answer:

In ΔACB,
AC = AB .......Given
begin mathsize 16px style angle ACB space equals space angle ABC.......... Isoscels space triangle.... left parenthesis straight i right parenthesis
angle ACB thin space plus thin space angle BCF space equals space 180 degree space space space space space space space linear space pair
angle ABC thin space plus thin space angle CBE space equals space 180 degree space space space space space space space linear space pair
up diagonal strike angle ACB end strike thin space plus thin space angle BCF space equals up diagonal strike angle ABC thin space end strike plus thin space angle CBE space space space space from space left parenthesis straight i right parenthesis
angle BCF space equals space angle CBE space
1 half angle BCF space equals space 1 half angle CBE
angle BCD equals angle CBD space space space space space space space space space space space space space space space space space space space space space space space CD space and space BC space are space bisectors space of space angle BCF space and space angle CBE
CD space equals space BD
In space increment ACD space and space increment ABD
CD space equals space BD
AC space equals space AB
AD space equals space AD space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space common space side
increment ACD space almost equal to space increment ABD space space space space space space space space space space space space space space space space space space space space SSS space test
angle CAD space equals space angle BAD space space space space space space space space space space space space space space space space space space space space straight c. space straight p space. space straight c. space straight t
AD space bisects space angle straight A

end style

Answered by Sneha shidid | 7th Jun, 2018, 10:49: AM