CBSE Class 9 Answered
In a quadrilateral ABCD, the line segments bisecting
C and
D meet at E. Prove that
A +
B = 2
CED. ![](https://images.topperlearning.com/topper/questions/8479_image002.jpg)
![](https://images.topperlearning.com/topper/questions/8479_image001.gif)
![](https://images.topperlearning.com/topper/questions/8479_image001.gif)
![](https://images.topperlearning.com/topper/questions/8479_image001.gif)
![](https://images.topperlearning.com/topper/questions/8479_image001.gif)
![](https://images.topperlearning.com/topper/questions/8479_image001.gif)
![](https://images.topperlearning.com/topper/questions/8479_image002.jpg)
Asked by Topperlearning User | 16 Aug, 2017, 14:17: PM
![](https://images.topperlearning.com/topper/questions/8479_image003.gif)
In
DEC,
1+
2 +
CED = 180o (angle sum property of triangle)
![](https://images.topperlearning.com/topper/questions/8479_image004.gif)
![](https://images.topperlearning.com/topper/questions/8479_image001.gif)
![](https://images.topperlearning.com/topper/questions/8479_image001.gif)
![](https://images.topperlearning.com/topper/questions/8479_image001.gif)
![](https://images.topperlearning.com/topper/questions/8479_image005.gif)
![](https://images.topperlearning.com/topper/questions/8479_image001.gif)
![](https://images.topperlearning.com/topper/questions/8479_image001.gif)
![](https://images.topperlearning.com/topper/questions/8479_image001.gif)
![](https://images.topperlearning.com/topper/questions/8479_image001.gif)
![](https://images.topperlearning.com/topper/questions/8479_image001.gif)
![](https://images.topperlearning.com/topper/questions/8479_image001.gif)
![](https://images.topperlearning.com/topper/questions/8479_image001.gif)
![](https://images.topperlearning.com/topper/questions/8479_image006.gif)
Answered by | 16 Aug, 2017, 16:17: PM
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