I am very tall. I stand at 6ft nine inches tall.
That's pretty tall. Did you play basketball? 
Yes I played college ball. For 4 years and tore my ACL my junior year.
Height is sometimes used as a name for more abstract definitions, like in algebra.
I din't know that. Very interesting. I was never good at Algebra.
In space models, height is the third dimension, the other two being length and width.
Wow. I wasn't aware there were dimensions and with regards to Space Models.
the length and width.
Height is also used as a name for some more abstract definitions. These include:
1. The altitude of a triangle, which is the length from a vertex of a triangle to the line formed by the opposite side;
2. A measurement in a circular segment of the distance from the midpoint of the arc of the circular segment to the midpoint of the line joining the endpoints of the arc (see diagram in circular segment);
3. In a rooted tree,
. Bartoli said: "I'd known John a long time, and I knew what he was trying to say. At the end of the day I am a tennis player, I know I'm not 6ft tall, I'm not the same long, lean shape as Maria Sharapova, but the beauty of tennis is that anyone can win, tall or short. Something the press took to be negative to me was a positive... In my mind it was never really a story."
Controversy 2016 Summer Olympics