Talk:Triangular number

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Illustration[change source]

The picture of discs (labeled "pebbles" !) is helpful in visualizing the concept, but there is no explanation of the colors used. I see the triangle as building from the apex. I don't understand what the grouping represented by the colors is supposed to represent. It grows from the lower left corner in accordance with the concept, but who interprets triangles that way? Kdammers (talk) 21:34, 29 November 2022 (UTC)[reply]

Kdammers I think the idea here is that people read from left to right. Do you think this image is better, or is it too hard to understand? Lights and freedom (talk) 21:39, 29 November 2022 (UTC)[reply]
It is clearer for me. What do others say? Kdammers (talk) 03:00, 10 December 2022 (UTC)[reply]
I'd say, the image that @Lights and freedom used is better for the article than the current one. If it was too hard for someone to understand, the caption can just explain it then. Angerxiety 03:03, 10 December 2022 (UTC)[reply]
I have changed the image. Lights and freedom (talk) 07:53, 6 January 2023 (UTC)[reply]