(Level 2) Lines b and c are parallel. Label all the missing angle measures on the diagram in the workspace.
(Level 2) Find the measure of
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(Level 2) Select all the pairs that are alternate interior angles.
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(Level 2) Select all the pairs that are corresponding angles.
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(Level 3) Find the value of x. Show your work in the workspace.

(Level 3) The base angles of an isosceles triangle measure 42

Explain your reasoning.
(Level 3) In the figure, lines m and n are parallel. Find the value of x.
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