Answer:
78
Step-by-step explanation:
∠A + ∠B + ∠C = 180 { Angle sum property of triangle}
42 + ∠B + 60 = 180
∠B + 102 = 180
∠B = 180 - 102 = 78
In similar triangles, corresponding angles are congruent.
∠S ≅ ∠B
∠S = 78°
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I did a graph using the points given, based on what I drew, I choose Choice A.
AB = 8 and CD = 8 ; therefore, ABCD is a parallelogram.
Lines AB and CD are parallel, they both have the same measure which is 8. That is why they form a parallelogram.
Line AC and BD both equal 5.
