Trapezoid 18313

Find the points A1 B1 symmetric along the y-axis to the points A [-4,0], B [-1,4]. Calculate the perimeter of the trapezoid AB B1 A1.

Correct answer:

S =  20

Step-by-step explanation:

A[4,0], B[1,4] A1[4,0], B1[1,4]  a=2 4=8 c=2 1=2 h=4  S=2a+c h=28+2 4=20



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