A four-sided polygon having all four sides of equal length. The sum of the angles of a rhombus is 360 degrees. Regular Polygon. A regular polygon is a polygon whose sides are all the same length, and whose angles are all the same. The sum of the angles of a polygon with n sides, where n is 3 or more, is 180  (n - 2) degrees.
Bigger muscle groups: 30-60 total reps per workout session. Smaller muscle groups: 20-30 total reps per workout session. Hence, your chest workout should have a total of 30-60 reps per workout because it belongs to the big muscle group. 3. Determine your ideal number of sets and reps: Because your goal is to build muscle mass, the ideal set/rep range for your chest workout is 3-4 sets of 6-8 reps or 2-3 sets of 9-12 reps.
A rep is the number of times you do it. So, 12 reps would be your repeating the exercise 12 times. A set is the 12 reps,or however many reps you do at one time. If you want to gain muscle, you do a lesser amount of reps with heavier weights.If you just want to tone, you do more reps with a lighter weight.Generally you do as many reps as it takes to reach failure (you can't do any more). Then you rest and do it again.f you want to gain muscle, you do a lesser amount of reps with heavier weights. If you just want to tone, you do more reps with a lighter weight. Generally you do as many reps as it takes to reach failure (you can't do any more). Then you rest and do it again.