Problem 131 of 7
Determine whether a quadrilateral with opposite angle pairs 115 degrees and 65 degrees and 90 degrees and 90 degrees can be cyclic.
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check opposite angle sums.
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Decision must check whether both opposite angle pairs sum to 180 degrees.
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Your answer is equivalent to the expected form.
Walkthrough
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1. Add one pair of opposite angles.
2. Add the other pair of opposite angles.
3. Decide whether the supplementary condition for cyclic quadrilaterals is met.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Checking adjacent angle sums only.