CBSE Class 9 Answered
In a parallelogram ABCD, prove that the sum of any two consecutive angles is 180o.
Asked by Topperlearning User | 09 Dec, 2013, 01:40: AM
ABCD is a parallelogram, therefore AD||BC
Now, AD||BC and transversal AB intersects them
![](https://images.topperlearning.com/topper/questions/8675_image003.gif)
![](https://images.topperlearning.com/topper/questions/8675_image001.gif)
![](https://images.topperlearning.com/topper/questions/8675_image001.gif)
Similarly you can prove that
![](https://images.topperlearning.com/topper/questions/8675_image001.gif)
![](https://images.topperlearning.com/topper/questions/8675_image001.gif)
![](https://images.topperlearning.com/topper/questions/8675_image001.gif)
![](https://images.topperlearning.com/topper/questions/8675_image001.gif)
![](https://images.topperlearning.com/topper/questions/8675_image001.gif)
![](https://images.topperlearning.com/topper/questions/8675_image001.gif)
Answered by | 09 Dec, 2013, 03:40: AM
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