Ion
tion
Using parallel lines and rotations, we can understand why the angles in a triangle a...
Mathematics, 17.08.2021 18:30 lillianneal
Ion
tion
Using parallel lines and rotations, we can understand why the angles in a triangle always add to 180°. Here
is triangle ABC. Line DE is parallel to AC and contains B.
D
B
E
xº
2°
yº
хо
A
Answers: 3
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