Every economic decision has "a consequence or tradeoff" - this final answer choice is correct. Every time that an individual, business, or institution makes an economic decision, they always forgo an opportunity to use the same capital or resources for other endeavors. As such, there is a tradeoff incurred by not making the decision to use the resource in another manner. This is known as opportunity cost and is one of the fundamental tenets of economic theory.

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3 years ago

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Given: ABCD is a parellelogram. Prove: AB=CD and BC=DA

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Answer:

Step-by-step explanation:

We have given a parallelogram ABCD.

For a parallelogram,

Opposite pair of sides are parallel to each other.

i.e AD is parallel to BC and AB is parallel to CD.

From the attached figure,

∡1 = ∡4 and ∡2 = ∡3 {If two parallel lines cut by a transversal line then alternate interior angles are congruent }

Next, AC ≅ AC {Reflexive identity}

hence, ΔABC ≅ ΔCDA , By Angle-Side-Angle(ASA) congruent property of triangle.

Therefore, AB = CD and AD = BC {Proved}

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2 years ago

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