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Question
The following figure is parallelogram. Find the degree values of the unknown x, y, z.
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Solution
\[\text{ Opposite angles are equal in a parallelogram } . \]
\[ \therefore y = 80°\]
\[y + x = 180° \]
\[x = 180° - 100°= 80°\]
\[z = y = 80° (\text{ alternate angles })\]
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