Send the following on WhatsApp
Continue to ChatAsk the user for three points located in the xy-plane as (x1; y1), (x2; y2) and (x3; y3). Check if these three points form a triangle. https://www.easterscience.com/faq/ask-the-user-for-three-points-located-in-the-xy-plane-as-x1-y1-x2-y2-and-x3-y3-check-if-these-three-points-form-a-triangle/