Answer:
1)The sum of the angles is 1260°.
2)
(a)heptagon
(b)pentagon
Step-by-step explanation:
(1)
Sum of all interior angles = (n – 2) × 180
Given that there are 9 sides, n=9
Sum of angles = ( 9 - 2) x 180 = 1260°
Therefore the sum of the angles in 9 sided polygon is 1260°.
(2)
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Answers & Comments
Answer:
1)The sum of the angles is 1260°.
2)
(a)heptagon
(b)pentagon
Step-by-step explanation:
(1)
Sum of all interior angles = (n – 2) × 180
Given that there are 9 sides, n=9
Sum of angles = ( 9 - 2) x 180 = 1260°
Therefore the sum of the angles in 9 sided polygon is 1260°.
(2)
(a)heptagon
(b)pentagon