## Elementary Technical Mathematics

1- $140^o$ 2- $40^o$ 3- $40^o$ 4- $140^o$ 5- $83^o$ 6- $97^o$ 7- $97^o$ 8- $83^o$
1- $140^o$ supplementary to 3 2- $40^o$ vertical angle with 3 3- $40^o$ given 4- $140^o$ supplementary to 3 5- $83^o$ supplementary to 7 6- $97^o$ vertical angle with 7 7- $97^o$ given 8- $83^o$ supplementary to 7