ISEE Word Problems Question 205: Answer and Explanation
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Question: 205
3. The measures of three of the angles of a quadrilateral are shown below.
What is the measure of the fourth angle?
- A. 50°
- B. 125°
- C. 150°
- D. 210°
Correct Answer: C
Explanation:
The answer is C
There are 360 degrees in a quadrilateral. Add up the given angles and subtract the sum from 360: 360 - (135 + 55 + 20) = 360 - 210 = 150.