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Math·Geometry and Trigonometry·Lines, angles, and triangles
hard
Note: Figure not drawn to scale.
- Triangle has a common vertex with triangle .
- The common vertex is
.
- For triangle
:
- The measure of angle
is .
- For triangle
:
- The measure of angle
is .

In the figure,
and intersect at point , , , , and .
What is the sum of the perimeters of triangles
and ?
A
58
B
106
C
118
D
177