# In parallelogram ABCD, the bisector of angle C intersects side AD at point N

In parallelogram ABCD, the bisector of angle C intersects side AD at point N, AN = 6, ND = 10. Find the perimeter of the parallelogram.

1. The bisector CN of the parallelogram ABCD cuts off the isosceles triangle CND from it. Therefore, ND = CD = 10 centimeters.

2. AD = AN + DN = 6 + 10 = 16 centimeters.

3. Opposite sides of a parallelogram are equal. Therefore, AB = CD = 10 centimeters. BC = AD = 16 centimeters.

4. The total length of all sides of the parallelogram (perimeter) = AB + CD + BC + AD = 10 + 10 + 16 + 16 = 52 centimeters.

Answer: the total length of all sides of the parallelogram (perimeter) is 52 centimeters.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.