Many angles

Geometry Level 2

Five lines: \(l_1\), \(l_2\), \(1_3\), \(l_4\) and \(l_5 \) intersect at point O and they are intersected by five other lines \(k_1\), \(k_2\), \(k_3\), \(k_4\)and \(k_5\) (see the picture). What is the sum of the measures of the 10 shaded angles in degrees, shown in the picture below? Give your answer in degrees.

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