Answer:
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Step-by-step explanation:
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Answer:
98 degrees
Step-by-step explanation:
57 + 41 is 98
so take 98 from 180 which is 82
then you take 82 from 180 to find x which is 98
Step-by-step explanation:
20°+120°+I°=180°
I=40°
using sine rule,
I/sin I=x/sinX
12/sin40=x/sin20
x=12sin20/sin40
x=6.4
using similarly and enlargement,
we have, cw/cp=y/120
8/12=y/120
y=80°
Congruent triangles have equal corresponding sides and angles.
- The measure of the side lengths are:
,
and 
- The measure of the angles are:
,
and 
The given parameters are:






means that triangles DEF and GHJ are congruent triangles.
So, we have:

This gives

Also, we have:

This gives

Also, we have:

This gives

The following angles are also congruent

This gives

Also, we have:

This gives

The measure of angle J is then calculated using

This gives


Subtract 139 from both sides

Read more about congruent triangles at:
brainly.com/question/4364353