Respuesta :
Answer:
Shapes w/ at least one pair of parallel sides: a, d
No parallel sides: b, c
Shapes w/ at least one obtuse angle: a, c
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Step-by-step explanation:
Hey there!
Shape A goes under section 1 & 3.
Shape B goes under section 2.
Shape C goes under section 2 & 3.
Shape D goes under section 1 & 3
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