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Home > INT2 > Chapter 10 > Lesson 10.2.5 > Problem 10-115


In at right, what is ? Explain how you found your answer.

There are multiple ways to find the measure of .

Examine the quadrilateral . The sum of the interior angles should be .

Check your answer! Is your answer for   and possible?

Triangle P, Q, R, is drawn with an interior point, S. Lines P, S, and S, R, are drawn. Angle S, P Q, is 40 degrees. Angle S, R, Q, is 35 degrees, and angle P, S, R, is 140 degrees.