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elixir [45]
3 years ago
15

I need help on this. An answer and an explanation would be great!!

Mathematics
1 answer:
charle [14.2K]3 years ago
4 0

Answer:

60 & 55

Step-by-step explanation:

1. the sum of the angles 1; 2 and 3 is 180°, then

m∠1=m∠2=m∠3; ⇒m∠3=60°;

2. m∠3=m∠r; ⇒ m∠r=60°;

3. m∠α= 180-(m∠r+65°)°; ⇒ m∠α=55°

all the details are in the picture.

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