One of the angles formed at the intersection of two straight lines is 21 degrees. Find the rest of the corners.

Since when two straight lines intersect, two pairs of vertical angles are formed, then the second angle will also be equal to 21˚.

Find the second pair of vertical angles 180˚ – 21˚ = 159˚, that is, each angle of the second pair is equal to 159˚.

Answer: the rest of the angles formed at the intersection of two straight lines are equal to 159˚, 21˚, 159˚.



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