Three interior angles of a quadrilateral have measures of 100∘, 120∘,100∘, 120∘, and 80∘80∘. Find the fourth angle measure.?
回答 (3)
2017-02-16 3:03 am
I'm not sure what's going on, but each value seems to appear twice.
I'll assume angles are: 100°, 120°, and 80°.
Did you know that sum of angles in a quadrilateral is 360°?
So just find an angle that when added to the other 3 will give 360°.
360−100−120−80 = 60
Fourth angle = 60°
2017-02-16 4:44 am
There are FOUR angles in a quadrilateral.
2017-02-16 3:02 am
The interior angles in a quadrilateral add up to 360°
S = (4 - 2) * 180 = 360°
Let x be the fourth angle.
100 + 120 + 80 + x = 360
300 + x = 360
x = 60°
Answer:
60°
S = (4 - 2) * 180 = 360°
Let x be the fourth angle.
100 + 120 + 80 + x = 360
300 + x = 360
x = 60°
Answer:
60°
收錄日期: 2021-05-01 21:27:23
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