What is the measure of angles 1, 2, and 3?
2 answers:
1 is 70 because the triangle has given angles of 45 and 65. If you add them you get 110 and a triangle is equal to 180° so 180-110 is 70.
2 is 65° because a line is equal to 180° as well so since 1 is 70 and being given 45, we add them to get 115 and 180-115 is 65.
3 is 95°because a triangle is equal to 180° so since 2 is 65 and being given 20°, you add those to get 85° and 180-85 is 95.
Answer:
1= 70
2= 65
3= 95
For 1, just solve 180-(65+45) and then for 2, subtract #1 and 45 from 180. Then just solve for #3 by using 180-(#2+20)
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Add like terms:
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Part A - 
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