Find the degree measure of DGF

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

∆red ≅ ∆ by rule will give brainiest if possible