Overview
I am in grade 12 and am having difficulty in Math, especially in spatial geometry.
Specifically, I am having problems determining the angle between two planes and calculating the distance between two intersecting lines. I have tried:
Reviewing the definitions and formulas in the textbook.
Solving sample exercises in the workbook.
Watching instructional videos on YouTube.
However, I still do not understand clearly how to apply the formulas and theorems to specific exercises. I often get confused between the steps and do not know how to draw the correct illustrations.
I really hope to receive help from everyone. I would like to ask:
Does anyone have experience studying spatial geometry well?
Are there any effective methods to determine angles and calculate distances in space waves ?
Are there any useful reference materials or lecture videos on this part?
Can anyone share tips on drawing illustrations for spatial geometry exercises?
I can spend about 2 hours a day studying Math. I am using the Math 12 textbook of the Ministry of Education and Training.