Which term refers to the bottom side of a shape, commonly used in area calculations?

Which term refers to the bottom side of a shape, commonly used in area calculations?

• A. Diameter
• B. Base
• C. Height
• D. Intercept

Answer: (B)

In area problems, base is the side you use as the reference length. It’s commonly pictured as the bottom edge, and you multiply that base length by the height (the perpendicular distance from that base to the opposite edge) to find area. This formula appears across shapes: for a rectangle, area = base × height; for a triangle, area = 1/2 × base × height. The other terms don’t fit this idea: diameter is a line across a circle through its center, height is a vertical distance but not specifically the bottom side, and intercept is about where a line crosses an axis in a graph.

In area problems, base is the side you use as the reference length. It’s commonly pictured as the bottom edge, and you multiply that base length by the height (the perpendicular distance from that base to the opposite edge) to find area. This formula appears across shapes: for a rectangle, area = base × height; for a triangle, area = 1/2 × base × height. The other terms don’t fit this idea: diameter is a line across a circle through its center, height is a vertical distance but not specifically the bottom side, and intercept is about where a line crosses an axis in a graph.