Assuming both vertical lines are parallel and assuming I'm supposed to find all the unmarked angles...
Angle C:
Supplementary Angles.
x+36=180
180-36=x
x=144
Angle B:
Corresponding Angles.
Angle B ≅ Angle C
144
Angle A:
360 degrees in a quadrilateral
36+144+81+x=360
261+x=360
x = 99
<em>Hope it helps <3</em>
Answer:
It's (C) 240in3
Step-by-step explanation:
Volume of the prototype is 250 in.³
Three that are equivalent are 12:9 8:6 28:21
Probably a C-, but it depends on how many other grades are in the gradebook and the exact percentage of your grade.