MATH CHALLENGE 30 POINTS Hey guys, here’s a math challenge for u. Fill in the missing slots. All the rows, columns, and diagonals have to have the same sum. First person to get the correct answer will get brainliest and a thanks. Go!

21     12       9

9      21     12

12      9      21

Step-by-step explanation:

Hope this helps :)

- Please mark brainliest

this is answer of 144 cubic meters

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)