Answer:
Step-by-step explanation:
m∠3 = 180 - m∠8 = 180 - 123 = 57
m∠1 = m∠3 = 57°
Answer:
to get the arithmetic means between 35 and 105 you must add the two and divide it by 2 so 35 + 105 equals to 140 then you divide it by 2 to get 70
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Alternate interior angles are congruent. So, angle 3 = angle 7.
We see that vertical angles are congruent. So, angle 3 also = angle 5.
Alternate exterior angles are congruent.
So, angle 3 also = angle 1.
