One angle of a quadrilateral is 216◦ and each of the other angles is x◦ . Find the value of x. Is this a concave or a convex polygon?
Answers
Answered by
1
Answer:
it is a concave polygon.
Step-by-step explanation:
sum of all angles of quadrilateral is 360°.
216 ° + x + x + x = 360 ° .
3x = 360 ° - 216 °
3x = 144°
x = 144° / 3
x = 48 °
it is a concave polygon because one angle is grater than 180 ° .
Answered by
0
Answer:
x+x+x+216°=360°
3x= 360°-216°
x= 144/3
x=48 ° is the answer
Similar questions