one interior angle = 30° <==== this one is given
second interior angle = 180 - 40 = 140° <=== interior angle + exterior angle = 180
third interior angle = 180 - 30 - 140 = 10° <=== angles in a triangle = 180
Answer:
c
Step-by-step explanation:
Answer:
The answer would be: D. (1,2) and (2,-1)
The answer is 5 planes - we count one for every side.
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Neither is correct. please try again and re-ask for answers or hint.
