mutoni55
05.06.2020 •
Mathematics
Two angles of a quadrilateral measure 140° and 80°. The other two angles are in a ratio of 3:4. What is the value of x? What are the measures of those two angles?
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Ответ:
60 and 80 degrees.
Step-by-step explanation:
The other 2 angles have the sum : 360 - (140 + 80)
= 360 - 220
= 140. (because the 4 angles in a quadrilateral add up to 360).
As the other 2 angles are in the ratio 3:4 one angle = 3/7 of 140 and the other is 4/7 of 140.
This is equal to 3 *20 and 4 * 20 = 60 and 80 degrees.
Ответ:
1st one
Step-by-step explanation: