Answer:
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Step-by-step explanation:
A ) P=6n+18 where N is the number of triangles. There's always two '9's and the 6 is based on how many triangles there are.
It’s gonna be number three :))
1 divided by 3

Turn fraction into decimal

Since it is repeating, and it's a 3, you don't need to round it up
The rule is 5+ = round up while 4- = round down.
Answer:
The degree measure of the four add up to 360 degrees. This is actually true of any quadrilateral. Let lower case letter a,b,c and d represent the angle of trapezoid ABCD. Then a+b+c+d= 360 degreees.