1. First Row's Shaded Portion = 1 Square. 2. 2nd Row's 1st Square's 2nd Square's shaded portion = 1.5 Square. 3. 3rd Row's 1st Square's 2nd Square's shaded portion = 1 Square 4. 2nd Row's 3rd Square 3rd Row's 3rd Square's shaded portion = 1 Square So total 4.5 Square are there which is 1/2 of total 9 Square Hence, the Answer is : 1/2.