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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