Final Answer:
The perimeter of a triangle is the sum of the lengths of its three sides. In this case, option b (80) represents the sum of the sides of triangle ABC. Each side contributes to the perimeter, and adding them together gives the total length around the triangle. Therefore, the correct answer is option b.
Explanation:
The perimeter of a triangle is determined by adding the lengths of its three sides. In the given question, the correct option is b. 80. This implies that the sum of the lengths of the sides of triangle ABC is 80 units. Each side of the triangle contributes to the total perimeter, and combining them gives the overall length around the triangle. This understanding aligns with the basic principle of perimeter calculation for triangles.
Perimeter is a foundational concept in geometry, providing a measure of the total boundary length of a two-dimensional shape. Specifically, for a triangle, it involves the summation of the lengths of its three sides. This mathematical concept has practical applications in various fields, such as architecture, construction, and engineering, where accurate measurements of boundaries are essential.
Comprehending perimeter is vital not only for academic problem-solving but also for real-world scenarios involving the determination of fencing lengths, material requirements, and spatial planning. The correct identification of the perimeter ensures precision in measurements and contributes to the accuracy of geometric calculations. Therefore, in the context of triangle ABC, the correct answer, b. 80, signifies the total length of the triangle's perimeter, showcasing the application of this geometric principle in practical situations.