MCQOPTIONS
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| 1. |
ABCD is a quadrilateral, the sides of which touch a circle. Which one of the following is correct? |
| A. | \[AB+AD=CB+CD\] |
| B. | \[AB:CD=AD:BC\] |
| C. | \[AB+CD=AD+BC\] |
| D. | \[AB:AD=CB:CD\] |
| Answer» D. \[AB:AD=CB:CD\] | |