exam Maths Puzzle Numerical Ability

Find the measure of an angle that is one-half the measure of its supplement.

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exam Other Question

Roland traveled from Nashville to St. Louis, a distance of 300 miles. If he had increased his speed by 10 mph he would have arrived at St. Louis an hour and 30 minutes sooner. What was his speed? Write a formal proof of the corollary.

The opposite angles of a parallelogram are congruent.