25burfields 25burfields

12-10-2021
Mathematics

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can u please help, it’s about finding measure of a triangle

can u please help its about finding measure of a triangle class=

Respuesta :

12-10-2021

Answer:

x = 20

<ACD = 113

Step-by-step explanation:

Exterior angle of a triangle is equal to the sum of the interior opposite angles of a triangle

There for,

<CAB + <ABC = <ACD

[tex]2x-9+4x+2 = 5x+13\\6x-7=5x+13\\6x-5x=7+13\\x=20[/tex]

Size of the <ACD

[tex]5x+13\\5*20+13\\100+13\\= 113[/tex]

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