prove that angle formed by intersection of bisectors of one interior angle and the exterior angle of other base angle is half the vertical angle of triangle(step by step)
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An angle bisector is one that cuts an angle into two equal halves. bearing in mind that a degree has 60 minutes and a minute has 60 seconds, so then 171°30' is just 171 degrees and 30 minutes.
Investigation: Constructing an Angle Bisector
Draw an angle on your paper. Make sure one side is horizontal.
Place the pointer on the vertex. Draw an arc that intersects both sides.
Move the pointer to the arc intersection with the horizontal side. ...
Connect the arc intersections from #3 with the vertex of the angle.
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