Beware of this user. They've been harrasing other users and is trying to get people to going a meeting with them and to turn on their cameras.

How to determine whether two known pairs of points are on the same line.

Abcd ≅ klmn ≅ pqrs ≅ wxyz given that information, which figures are reflections of abcd?

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is