standard_description: Identify the shapes of two-dimensional cross-sections of three-dimensional objects, and identify three-dimensional objects generated by rotations of two-dimensional objects.
problem_activity: $${\overline{AD} \parallel \overline{BC}}$$
and
$${\angle EJB}$$
is supplementary to
$${\angle JBK}$$
. Prove that
$${\overline {AD} \parallel \overline{JE}}$$
.
[IMG]


aligns: no