I need to show my work as well

angle y= 90

angle z= 45

angle x= 45

Step-by-step explanation:

Atriangle has 180 degrees. The y angle is 90 degrees because whenever a shape has the square thing it means it is 90 degrees. so 180-90 = 90. Since both of the other angles are the same 90/2 = 45. so angle y= 90 degrees and angle z= 45 degrees and angle x=45 degrees

i got 142 as my answer

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.