Triangles CBA and CED are similar.

AB is parallel to DE.

AB = 9cm, BE = 4.8cm, EC = 6cm and ED = k cm.

Work out the value of k.

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

Which of these triangle pairs can be mapped to each other using two reflections?

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?