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→Activity No # 2. Angle sum property of a triangle
Please click the following link for the proof
Please click the following link for the proof
# [http://www.mathsisfun.com/triangle.html Please click the following link for the proof] :
# [http://http://courses.metastudio.org Please click the following link for the proof] :
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{| style="height:10px; float:right; align:center;"