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PLS I NEED HELP!! I don’t understand this!!

PLS I NEED HELP I Dont Understand This class=

Sagot :

801532

Answer:

180=x+139

x=41

90=x+18

x=72

Step-by-step explanation:

the 1st one is a straight line, it is a 180° angle. To find the missing piece, x, you need to do 180-139 and get 41°.

the 2nd one is a right angle (because it has a square at the inner corner), its 90°. To find x, you need to do 90-18 and get 72°