Question

find the unknown marked angle​

Answer 1

Answer:

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☯️Here's ur answer...♤♡◇♧

Step-by-step explanation:

$\huge{ \bf{ \blue{ \mid{ \underline{ \overline{ \green{angles....}}}}}}}$

$\large{ \sf{ here \: ray( \: be )\: and \: ray \:( cf )\: are \: parallel}} \\ \large{ \sf{ \: then \: < abe = < bcf}} (\red{ corresponding \: angles}) \\ \large{ \sf{given \: < abe = 90}} \\ \large{ \sf{ = > \: \: < bcf = 90}} \\ { \large{ \sf{ \boxed{ = > \: \: < s = 90}}}} \\ \large{ \sf{ < s + < t = 180}} \: (\red{linear \: pair}) \\ = > \large{ \sf{ 90 + < t = 180}} \\ \boxed{ \ = > \large{ \sf{ < t = 90}}}$

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