Answer:
---------------HeyA AtorO ----------------------
[tex] \large{ \tt{ \star \: S \: O \: L \: U \: T \: I \: O \: N : }}[/tex]
- We're provided a parallelogram ABCD. You must have known that the opposite angles of parallelogram are always equal.
∠C = ∠A = 123° & ∠C = ∠D = x ° { suppose }
- Set up an equation & solve for x :
[tex] \tt{ \star \: {123 \degree + 123 \degree + x + x = 360 \degree}}[/tex]
[tex] \longrightarrow \tt \: 246 + 2x = 360[/tex]
[tex] \longrightarrow \tt \: 2x = 360 - 246[/tex]
[tex] \longrightarrow \tt 2x = 114[/tex]
[tex] \longrightarrow \tt \: x = \boxed{ \tt{57}}[/tex]
- Hence , Our final answer is 57° .
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