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Mars2501 [29]
3 years ago
9

In the diagram, what is the measure of angle 1?

Mathematics
2 answers:
kozerog [31]3 years ago
6 0

Answer:

45

Step-by-step explanation:

3x+9x=180

x=180/12=15

<3x=<1

3x=3*15=45

then <1 =45

grin007 [14]3 years ago
5 0
3X+9X=180
12X=180
X=15°
Angle 1=3X
Angle 1 =45°
That's your answer.
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