Question

The measurement of four angles of a pentagon are 65"89", 132", 116" respectively. Let's
write the measurement of the fifth angle.​

Answer 1

Step-by-step explanation:

let fifth angle be x. 65+89+132+116+x=540 (angle sum property of pentagon). 402+x=540. x=540-402 = 138. hence the fifth angle is 138