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CBSE Class 9 Answered

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Asked by Girishdhawan | 01 Jul, 2018, 03:19: PM
Expert Answer
begin mathsize 16px style The space exterior space angle space is space equal space to space the space sum space of space its space interior space opposite space anggles.
angle ACD equals angle BAC plus angle ABC......... left parenthesis straight i right parenthesis
angle BAE equals angle ABC plus angle ACB......... left parenthesis ii right parenthesis
angle CBF equals angle BAC plus angle ACB.... left parenthesis iii right parenthesis
Add space left parenthesis straight i right parenthesis comma space left parenthesis ii right parenthesis space and space left parenthesis iii right parenthesis
angle ACD plus angle BAE plus angle CBF equals 2 open parentheses angle ABC plus angle BAC plus angle ACB close parentheses
angle ACD plus angle BAE plus angle CBF equals 2 cross times 180 degree
angle ACD plus angle BAE plus angle CBF equals 360 degree end style
Answered by Sneha shidid | 06 Jul, 2018, 10:51: AM
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