Question

Write the expression for finding the total
sum measure of all the interior angles
of a polygon having n sides. Verify the
expression taking appropriate examples.​

Answer 1

Answer:

(n-2)*180

Step-by-step explanation:

Consider a pentagon,

• We know that the sum of interior angles of a triangle is 180°

• The pentagon can be divided into 3 triangles by drawing lines from a vertex

• Hence the sum of interior angles of a pentagon is 3*180 = 540° ⇒( 5-2)*180

• Thus the total sum measure of all interior angles of a polygon is (n-2)*180

Answer 2

Step-by-step explanation:

Six salivary glands, located around the oral cavity, secrete saliva. This substance moves out of the glands into the oral cavity through ducts. Saliva is 99% water, but also contains enzymes and proteins that lubricate the oral cavity and begin chemical digestion of food.

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