Ventricular septal defects are the second most common defect. Ventricular septal defect occurs in about 25% of all infants born with a heart defect. These defects are more common in premature infants. Treatment for ventricular septal defect include reduce symptoms with medications, antibiotics, or surgery.
Heptagon. A heptagon is a seven-sided polygon. It is also sometimes called a septagon, though this usage mixes a Latin prefix sept- (derived from septua- , meaning seven) with the Greek suffix-gon (from gonia, meaning angle), and is therefore not recommended. The regular heptagon, illustrated above, has Schlaefli schlÃ¤fli. symbol
In a regular heptagon, one in which all sides and angles are equal to each other, each interior angle is equal to approximately 128.57 degrees, with the sum of all interior angles being equal to 900 degrees. The area of a regular heptagon can be found by multiplying 3.63 by the length of one side squared.