# STEP Support - Assignment 9

### Introduction

This STEP support module includes some proofs involving triangles and sketching cubics. Previous assignments can be found here, but you can do this one without having done the others first.

STEP questions are difficult, they are supposed to be and you should expect to get stuck. However, as you tackle more and more STEP questions you will develop a range of problem solving skills (and spend less time "being stuck").

The final question is Euclid's proof that the base angles in an isosceles triangle are the same, known as "the pons asinorum" or "bridge of donkeys". If differs to the proof in question 1(i) in that the condition $SSS$ for congruent triangles cannot be used.