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RSB [31]
2 years ago
11

What is m∠1? Help me, please

Mathematics
1 answer:
vesna_86 [32]2 years ago
5 0

Answer:

119

Step-by-step explanation:

By using exterior angle theorem, we know that 31+angle 1 =150. therefore angle 1=119. Exterior angle theorem is where an angle exterior of an angle in the triangle addus up to 180 degreees, we also know the angles in a triangle sum to 180 degrees. Both sides have a common angle. If we subract it from the equation, we get what is said above.

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