NO, diagnonals do NOT bisect the angles. However, the two diagonals are congruent to each other. Also, they are not perpendicular to each other.

You need to draw a rectangle bisected with a diagonal 10mm long. The rectangle must be 6mm wide. How long should this rectangle be

The diagonals of the rectangle bisect the angles in two equal halves. Each angle of the rectangle that was 90 degrees before, becomes 45 degrees after it is being bisected.

Draw a rectangle bisected with a diagonal 10 mm long. The rectangle must be 6 mm wide. This rectangle should be how long?