cosmepartida7 cosmepartida7

23-09-2020
Mathematics

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

I need help on this An answer and an explanation would be great class=

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evgeniylevi evgeniylevi

23-09-2020

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°

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