Bunuel wrote:
In parallelogram ABCD above, what is the measure of ∠ADC?
(1) The measure of ∠ABC is greater than 90°.
(2) The measure of ∠BCD is70°.
Solution:
PreAnalysis:
- We are given a parallelogram ABCD.
- As soon as we hear "parallelogram", all the properties of parallelogram should start running in our mind like:
- Opposote sides equal andparalle l i.e.,\( AB =CD\) ,\( AD =BC\) ,\(AB||CD\) and\(AD||BC\)
- Opposite angles
...
Attachments
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