Given angle ABC is a right angle and angle DeF is a right angle prove all right angles are congruent by showing that angle ABC. =d e f what are the missing reasons in the steps of the proof

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.

27 +27 or 27times 2=54

the diffrence is 0

hello umm i don't understand your question can you explain it more pls

step-by-step explanation:

0lz try yourself sorry for not answering