Respuesta :

Answer:

Part 1) The measure of angle F is [tex]73\°[/tex]

Part 2)The value of x is [tex]17\°[/tex]

Step-by-step explanation:

Part 1) Find the measure of angle F

we know that

[tex]<F+107\°=180\°[/tex] -----> by supplementary angles

[tex]<F=180\°-107\°=73\°[/tex]

Part 2) we know that

The sum of the internal angles of a triangle must be equal to 180 degrees

so

In this problem

[tex]<D+<E+<F=180\°[/tex]

substitute values and solve for x

[tex]51\°+(3x+5)\°+73\°=180\°[/tex]

[tex]3x=180\°-129\°[/tex]

[tex]3x=51\°[/tex]

[tex]x=17\°[/tex]