Answer:
-4
Step-by-step explanation:
For a regular polygon with n sides, interior angle
= [(n-2) × 180°]/n
So, interior angle of this regular heptagon shape
= [(7 - 2) × 180°]/7
= (5 × 180°)/7
= 900°/7
= (900/7)°
= 128.571° [approximately]
81 is the perfect square because 9 * 9
1 divided by 3

Turn fraction into decimal

Since it is repeating, and it's a 3, you don't need to round it up
The rule is 5+ = round up while 4- = round down.
Answer:
It’s D
Step-by-step explanation:
I did it on EDG