Add array-based intersection tree section to intersection_trees.ipynb#12

gjbex merged 2 commits intodevelopmentgjbex/Python-for-programmers:developmentfrom

copilot/fix-0e08f144-3e22-48b8-8da9-c7c672219314gjbex/Python-for-programmers:copilot/fix-0e08f144-3e22-48b8-8da9-c7c672219314Copy head branch name to clipboard