Question

1. the perimeter p of a triangle is equal to the sum of the lengths of sides a, b, and c.

Explanation:

Step1: Define the perimeter of a triangle

The perimeter \( P \) of a triangle is the sum of the lengths of its three sides \( a \), \( b \), and \( c \).

Step2: Write the formula

Mathematically, this can be expressed as \( P = a + b + c \).

Answer:

The formula for the perimeter \( P \) of a triangle with side lengths \( a \), \( b \), and \( c \) is \( \boldsymbol{P = a + b + c} \).