The construction requires an arithmetic operation using the appropriate length and the number of segments given.
1.)
a + b = 1 length of segment a combined with 1 length of segment b
2.)
a - b = 1 length of segment b is deducted from 1 length of segment a
3.)
2b + a = 2 lengths of segment b is added to 1 length of segment a
4.)
a + b + c = 1 length of segment a, b, c are added together
5.)
a + 2b - c = 1 length of segment a is combined with 2 lengths of segment b and 1 length of segment c is deducted from the sum.
The completed line segment is attached.
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