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Sagot :
Answer:
20°
Step-by-step explanation:
To find ∠C you don't even need 90° unless you would want to check if you are correct. to find ∠C you would just look for the whole triangle, so basically A + B + C = 180.
80 + 30 = 110
180 - 110 = 70
∠C = 70
Then you would take 70° and subtract it to 90° since it is a right angle combined with x and you would get your answer which is 20°.
Step-by-step explanation:
Angles in a triangle add up to 180°
30° + 80° =110°
180° - 110° = 70°
Angles in a straight line add up to 180°
70°+ 90°+x =180°
160°+x =180°
x =180°-160°
x =20°
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