What angle relationship best describes angles EFC and EFD?

Explanation:

A linear pair of angles is where they are both adjacent and supplementary.

Adjacent angles share a common line or ray. In this case, they share ray FE.

Supplementary angles add to 180. So they combine to a straight angle.

answer:   rotate 270° clockwise about (7, 1) and reflect across the line x = 7

step-by-step explanation:

because i took test

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116