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22) 8

21) <7 and <5

20) 24

Step-by-step explanation:

Hello there! Mizuki is here to help!

For 18, the correct option is 104.

For 19, the correct option is 70.

For 20, the correct option is 24.

For 21, the correct answer is angle 7 and 5(also the last option)

For 22, the value of x is 8!

Sorry for not including work for 18-20!

Step-by-step explanation:

22 work:

180 - 140 = 40

40 ÷ 5 = 8

21:

Congruent is a equal side, so basically the sides with same degrees.

The congruent angles here are angle 7 and angle 5, and angle 8 and angle 6.

But on the options, there is only angle 7 and 5, so that is the correct answer.

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d