hứa vote 5* và cảm ơn

$\text{*Ta có:}$$\widehat{M2}=$$\widehat{M3}=$`65^o` $\text{(2 góc đối đỉnh)}$

$*\widehat{M2}+$$\widehat{M4}=$$180^o$ `\text{(2 góc kề bù)}`

→$\widehat{M4}+$$65^o=$$180^o$

→$\widehat{M4}=$`180^o-``65^o=``115^o`

→$\widehat{M4}=$$115^o$

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`\*hat{N1}=``\hat{M4}=`$115^o$ `\text{(2 góc so le trong)}`

$*\widehat{N2}=$$\widehat{M3}=$`65^o` `\text{(2 góc so le trong)}`

`\hat{N3}=``\hat{N2}=`$65^o$ `\text{(2 góc đối đỉnh)}`

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`\text{#mct}`