Question

sum of all interior angle of a pentagon ​

Answer 1

Step-by-step explanation:

sum =360/sides

sum=360/5

sum =72°

Answer 2

Answer:

Why is the sum of an interior angle 180? The sum of the angles in a triangle is 180°. The sum of the angles in a square (or other quadrilateral) is 360 °. Since two congruent triangles will combine to form a square or other quadrilateral, the sum of the angles in one of the triangles is half of 360°, or 180°.

Step-by-step explanation:

540°

sum of all interior angle of a pentagon

Internal angle: 108°

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