What do you mean? It mainly depends on what polygon you are looking at. But if you are looking at a polygon and want to know if it's congruent, then just picture yourself folding the polygon in half. If there is pieces sticking out, then it is not congruent, but if it aligns perfectly, then it is congruent.
I think it is D
Hope this help you?!
Answer:
theta = 180 -(A +B)
Step-by-step explanation:
The sum of the angles of a triangle is 180
theta + A + B = 180
solve for theta
Subtract ( A + B) from each side
theta +A+B -(A +B) = 180 -(A +B)
theta = 180 -(A +B)
9/10 + 1/6 = 27/30 + 5/30 = 32/30 = 1 2/30 reduces to 1 1/15
Answer:
120 minutes.
Step-by-step explanation: it says before it only has 10 gallons left. Subtract to get 90 gallons before solving. 90/0.75=120. It will take her 120 minutes to have 10 gallons left after draining 90 gallons.