In SMART goals, the ’M’ stands for ’Measurable’. A goal must be measurable, meaning there should be clear criteria to track the progress and determine when the goal has been achieved.
In the adjoining figure, $\triangle CAB$ is a right triangle, right angled at A and $AD \perp BC$. Prove that $\triangle ADB \sim \triangle CDA$. Further, if $BC = 10$ cm and $CD = 2$ cm, find the length of AD.