10. Given triangle BCD as shown at right. If GE = 12, GC = 16, and EF = 10, find
DF.
EDF
B

5) Segment B'D' will be parallel to segment BD and will be shorter than segment BD. Please see the attached figure (a) for better understanding.
7) Δ ABC is similar to Δ EDF and x=r*w/z.
8) x+15=28 +12.
9) The line segment which is drawn from point A to point A′ is perpendicular to the y-axis.
13) Its D.Translation of (x, y + 2), reflection over y = 1, and 180° rotation about the origin.

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1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!