Question 17
Based on the figures below, how many shaded triangles in pattern 15?
Editorial counting convention: count shaded triangles of the smallest grid size, as in the supplied reference answer. Larger triangles composed of several cells are not separate units in this question.
Editorial counting convention: count shaded triangles of the smallest grid size, as in the supplied reference answer. Larger triangles composed of several cells are not separate units in this question.