Line d has a slope of –7 4 . Line e is perpendicular to d . What is the slope of line e ? Simplify your answer and write it as a
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Hello,
=70 (sum of angles of a triangle=180°)
supplementary angles
translation BC
image of the angle DAB by the axis symmetry DB
opposed angles of a parallelogram
are supplementary.
opposed angles by the vertex
alterne-interne angles (sorry for the words English is difficult for me)
are supplementary.