In the past few years, banks and companies have increased security by switching from simple static passwords to more dynamic security measures that offer greater protection for users of mobile and web commerce. The most personal method for authentication is analysis of handwritten signatures. Signature evaluation determines whether an individual's signature is considered \"Good\" or \"Bad.\" A good signature is more complex and difficult to impersonate, whereas a bad signature is simple and easy to impersonate. A signature typically contains many angles, whether big or small. A signature with a higher number of angles is more complex and is considered \"good\"; therefore, the number of internal angles was calculated to determine the quality of the signature.