what happened to the twin towers ?
The twin tower's were attacked by terrorist with two air planes which led to thousands of people dying also known as 9/11
The picture of the prove is necessary!
Answer:
A cheerful teen willing to help,
stay salty...
Explanation:
Angles in a heptagon equals 900°
i.e (n-2)×180 where n is substituted for the number of sides.
Find the sum of the remaining angles and subtract it from 900°
120+125+138+82+95+3x+x=900°
560°+4x=900°
4x=900°-560°
4x=340°
Divide both sides by 4
x=85°
while 3x= 255°
A is your answer (:
hope this helps
