CBSE Class 8 Answered
The bisectors of two adjacent angles of a parellogram intersect at
(a) 30º (b)45º (c) 60º (d) 90º
Give reason for your answer
Asked by gspublicschool | 09 Oct, 2018, 06:56: AM
Expert Answer
Here AB || DC
angle BAD + angle ADC = 180.......interior pair of angles
1/2 angle BAD + 1/2 angle ADC = 90.
In triangle AOD
angle OAD + angle ADO + angle AOD = 180
angle OAD = 1/2 angle BAD
angle ADO = 1/2 angle ADC
90 + angle AOD = 180
angle AOD = 90
Answered by Arun | 09 Oct, 2018, 10:48: AM
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