Is there enough information to prove each quadrilateral is a parallelogram? Explain.
1 answer:
Answer:
1. yes
2, no
3. yes
4. yes
Step-by-step explanation:
1. yes
If both sets of opposite sides are congruent, the quadrilateral is a parallelogram.
2. no
We know two side lengths. We know nothing about the other 2 sides and also nothing about all 4 angles.
3. yes
The missing angle must be 102°. With both pairs of opposite angles congruent, it must be a parallelogram.
4. yes
With both pairs of opposite angles congruent, it must be a parallelogram.
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Step-by-step explanation:
Answer:
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Step-by-step explanation:
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1) Subtract both sides by 9:
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Answer:
20
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