Answer:
B a = 180 -77-60
Step-by-step explanation:
The angles add to 180 degrees since they form a straight line
77+ 60+a = 180
a = 180 -77-60
Is there a picture?
multiply base by height and divide by 2.
Answer:
what is the et and 111214 for
Step-by-step explanation:
but 6(5 +4) = 30 + 15
the missing number is 15 though