You may also like

problem icon

Coke Machine

The coke machine in college takes 50 pence pieces. It also takes a certain foreign coin of traditional design...

problem icon

Just Opposite

A and C are the opposite vertices of a square ABCD, and have coordinates (a,b) and (c,d), respectively. What are the coordinates of the vertices B and D? What is the area of the square?

problem icon

Get Cross

A white cross is placed symmetrically in a red disc with the central square of side length sqrt 2 and the arms of the cross of length 1 unit. What is the area of the disc still showing?

Parallel Universe

Stage: 4 Challenge Level: Challenge Level:2 Challenge Level:2

Use similar triangles to show the perpendicular form Q meets AB at R where

AR = RB

Then you need to find pairs of congruent triangles