- #1

teddyayalew

- 36

- 0

## Homework Statement

A right-angle is drawn on a sheet of paper. A ruler , which always remains perpendicular to the bisectrix of this angle moves over the paper with a speed 10cm/sec. The ends of the ruler intersect the sides of the angle. What are the speeds along the sides of the angle of their points of intersection with the ruler?

## Homework Equations

## The Attempt at a Solution

I'm not asking anyone to give me a solutions I am just having difficulty picturing the physical scenario described in the question

1) Am I right to assume it means a right angle with legs parallel to the sides of the paper?

2) I don't understand what bisectrix means if not bisector and if so then how is the ruler perpendicular to the bisectrix and what is the bisectrix?