what are concave qusdrilteral
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A concave quadrilateral has a reflex interior angle measure. In other words one interior angle measure is greater than 180 degrees. A dart is one example of a concave quadrilateral.
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Step-by-step explanation:
Quantum mechanics (QM; also known as quantum physics, quantum theory, the wave mechanical model and matrix mechanics), part of quantum field theory, is a fundamental theory in physics. It describes physical properties of nature on an atomic
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