1) The measures of the three angles of a quadrilateral are 82, 101 and
120, respectively. Find the measure of the fourth angle.
2) If 2 measures 75°, find the measures of angles 1 and 3 given that
they are congruent. Refer to the figure at the right.
3) The interior angles of a triangle are in the ratio 1:2:3. What are the
measures of the three angles?
4) The measure of an exterior angle of a regular polygon is 45, how many sides does it have?
5) The measures of the exterior angles of a convex pentagon, one at each vertex, are as
follows: 1 = 5x, 2 = 6x - 6, 3 = 6x + 9, 4 = 7x + 3, and 5 = 9x - 9. Find the
measure of each angle.
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Answer:
1. 57°
2. ?
3. 30°, 60°, 90°
4. 8°
5. 11°
Step-by-step explanation: