area triangle ABC = \frac{1}{2} * b * h = \frac{bh}{2}
area of each small triangles = \frac{1}{2} * \frac{b}{2} * \frac{h}{2} = \frac{bh}{8}
Area of shaded region = 2 * \frac{bh}{8} = \frac{bh}{4}
Area of unshaded region = `\frac{bh}{2}`+ \frac{bh}{4} = \frac{bh}{4}
Ans. C
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