Answer:
x ≈ 777.9 m
Step-by-step explanation:
The lower right angle = 40° ( alternate angle )
Using the sine ratio in the right triangle
sin40° = = ( multiply both sides by x )
x × sin40° = 500 ( divide both sides by sin40° )
x = ≈ 777.9 m ( to the nearest tenth )
1.) supplementary m<1+m<2=180 and m<2+m<3=180
2.) congruent, supplementary
the answers are in this order above