Sharing Our Innermost Thoughts

I had an argument with my boyfriend about What is the height of a rectangle? Can it be the width or can the height be the same as the width? I told to him that the height will be the same as the width but actually we use the width and length and he said that I dont know mathematics at all and the childrens of his sister that a smaller know this basic things… what do you think is I am right? And about his comments? Thank you