Last couple of weeks my 5th 6th period class has been reviewing over relative error and different methods of measurments of trangles and equilaterals(pic below). we also were working more with geogabra. these topics we have been going over with is not too much trouble for me. so far class has been not bad and productive.the formula (n-2)180 defines how to find the sum of all angles in an n-polygon. for example a hexagon has six sides but you dont know how to find the sum of all together, plug in 6 for n and solve. Also we have learned how to find a\exterior angles of a polygon, extend a adjcent side and measure that angle.
Last couple of days we have been going over 4 tiangle measurements such as bisector, midsegment,perpendicular bisector,median,altitude. Bisector is a line segment that is divided into two equal parts(1). Perpendicular bisector is a segment into two qual parts at 90 degrees(2). Median segment that joins a vertex at opposite midpoint(3). Altittude line through vertex perpendicular to the opposite side(4).