if the perpendicular drawn from the midpoint of any two sides of a triangle are equal prove that the triangle is an isosceles triangle ​

Question 5 spring semester final exam math evaluate

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

If rt is greater than ba, which statement must be true ?