Answer:
180°
Step-by-step explanation:
∠LMN = 90° and is the angle in a semicircle, thus
LN is the diameter of the circle and the measure of arc LPN is
m arc LPN = 180°
Answer: $20
Step-by-step explanation:
half of 40 is 20.....
The measure of exterior all angles of a regular n-agon is 180
now for the decagon which has 10 angles is 180/10=18