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A.6 Which is correct?
Angles
How can you find the measure of
∠
1.
Alex's "Linear Angle" Method
I think the bottom three angles add to 180° because they form a line.
I solved for the measure of
∠
1
.
I notice that the measure of
∠
1
and
∠
B
are the same.
55°
+
50°
+
m
∠
1
= 180°
105° +
m
∠
1
= 180°
m
∠
1
=
75°
m
∠
1
=
m
∠
B
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