Step-by-step explanation:
first use the formula box slope m then use y intercept equestion
The reason is the gotter of the right angle is 12
Answer:
12
Step-by-step explanation:
Answer:
80
Step-by-step explanation:
every triangle adds up to 180 sort of, in this case, turn 4 into 40. 40+20=60 so add 80 to be 180!!!