Mark is solving the following system.
1 answer:
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The given angles are =
(x+40)° and 3x°
As the given angles are opposite to each other on the intersecting lines, so they are vertical angles. These are congruent or equal.
So,
Hence x = 20°
The given angles are =
(x+40) = 20+40 =60°
3x = 3*20 =60°