Answer:
adbe
Step-by-step explanation:
because BC//AD
=> ∠BCA = ∠CAD
ΔABC has: ∠B + ∠BCA + ∠BAC = 180°
ΔADC has : ∠D + ∠CAD + ∠ACD = 180°
but ∠B = ∠D; ∠BCA = ∠CAD
=> ∠ BAC = ∠ACD
=> AB // DC
ABCD has AB//DC, BC//AD
=> ABCD is a parallelogram
=> AB ≅ CD
the answer is negative infinity to infinity since the range is -66 to infinity
f ( x ) = - ( x + 1)^2 + 4
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Vertex = ( - 1 , 4 )
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Domain = R
Range = ( - infinite , 4 ]
