Answer:
Option A) 20 ... ... ... ✔
Step-by-step explanation:
[tex] \underline{\tt{❖ \: Given \: \: ❖}}[/tex]
- interior angle of triangle 2x,3x4x
[tex] \underline{\tt{❖ \: Solution \: ❖}}[/tex]
We know that interior sum of all angle is 180°
[tex]\; \;\dashrightarrow \;\pmb {2x+3x+4x=180°}[/tex]
[tex]\; \;\dashrightarrow \;\pmb {9x=180°}[/tex]
[tex]\; \;\dashrightarrow \;\pmb {x = \dfrac{180}{9} }[/tex]
[tex] \; \;\dashrightarrow\; \; {\pmb{\underline{\boxed{\red{\frak { x = 20 }}}}}} \; \green\bigstar[/tex]
