A quadrilaterals angles = 360°
three angles are given, with the fourth as x: 90, 80, 74, x
Add all the angles together and set it equal to 360
90 + 80 + 74 + x = 360
Simplify. Combine like terms
x + 244 = 360
Isolate the x, subtract 244 from both sides
x + 244 (-244) = 360 (-244)
x = 360 - 244
x = 116
116° is your answer
hope this helps
Answer:
1-51
2-18
3-123
4-39
Step-by-step explanation:
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Air sacs in your lungs allowing clean air in and bad air(carbon dioxide) out.
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This is my own answer. I've been asked this question before so I know. I hoped I've helped!
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