Thank you

Thank you

In 1989, just now, at the age of five, one day, ago, long ago, once upon a time, then, on that day

Find the marker of the general present tense and the general past tense

Sometimes, usually, always, sometimes, never, seldom, every week / day / year / month..., once a week, on Sundays

The symbol language of high line, middle line and bisector of triangle
What is symbolic language? As soon as possible,

Ad is the high of Δ ABC, which can be expressed as ad ⊥ BC in D
Midline AE, be = CE
Angular bisector AF,
∠FAB=∠FAC.