The problem asks us to find the area of an arrow-shaped figure plotted on a coordinate plane. The vertices of the figure are given as (-2, 2), (5, 2), (5, 6), (12,0), (5, -6), (5, -2), and (-2, -2).

GeometryAreaComposite ShapesRectangleTriangleCoordinate Geometry
2025/4/26

1. Problem Description

The problem asks us to find the area of an arrow-shaped figure plotted on a coordinate plane. The vertices of the figure are given as (-2, 2), (5, 2), (5, 6), (12,0), (5, -6), (5, -2), and (-2, -2).

2. Solution Steps

We can divide the arrow into a rectangle and a triangle.
The rectangle has vertices (-2, 2), (5, 2), (5, -2), and (-2, -2).
The length of the rectangle is 5(2)=75 - (-2) = 7.
The width of the rectangle is 2(2)=42 - (-2) = 4.
The area of the rectangle is length×width=7×4=28length \times width = 7 \times 4 = 28.
The triangle has vertices (5, 6), (12, 0), and (5, -6).
The base of the triangle is the vertical distance between (5, 6) and (5, -6), which is 6(6)=126 - (-6) = 12.
The height of the triangle is the horizontal distance between (12, 0) and (5, 0), which is 125=712 - 5 = 7.
The area of the triangle is 12×base×height=12×12×7=6×7=42\frac{1}{2} \times base \times height = \frac{1}{2} \times 12 \times 7 = 6 \times 7 = 42.
The area of the arrow is the sum of the areas of the rectangle and the triangle.
Area of arrow = Area of rectangle + Area of triangle = 28+42=7028 + 42 = 70.

3. Final Answer

70

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