cho tứ giác abcd có 2 đường chéo vuông góc với nhau gọi e, f,g, h là các trung điểm của ab, bc, cd, da cmtuws giác efgh là hình chữ nhật

It's more opinion based, so it really depends on your personal views of the topic of religion, there is no wrong answer, with the exception of irrelevant answers.hope that .

This is called visual imagery. it is a memorization technique wherein an idea or a term is associated with an image, this in remembering ideas, especially as humans are very visual learners. this is also why visual aids a lot for memory retention.