Platforms
What is the m∠ACB?
m∠XBC = °
135
The m∠MXN is the m∠YZX.
The m∠LZX is the m∠ZYX + m∠YXZ.
The m∠MYL is 180° − m∠ZYX.
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Instruction
Triangles and Their Side Lengths
Isosceles Triangles