What word best describe the line of symmetry in the letter d

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

In the triangles, bc =de and ac fe.if the mzc is greater than the mze, then ab isdfelth

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 165-pound man? 1.0 kg ca 5.1 kg ca 1.0 x 102 kg ca 5.1 x 102 kg ca