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Exploring
Centers of a Triangle: Part 1
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Berger, E. J.
(1951). An angle bisector device. Mathematics
Teacher, 44, 415.
-----.
(1951). Incenter demonstrator. Mathematics
Teacher, 44, 416-417.
Byrkit, D. R.
& Dixon, T. L. (1987). Some theorems involving the lengths of segments
in a triangle. Mathematics Teacher,
80, 576-579.
Constantia,
M. (1964). Dr. Hopkins' proof of the angle bisector problems. Mathematics
Teacher, 57, 539-541.
Holzinger, J.
(1963). The problem of the angle bisector. Mathematics
Teacher, 56, 321-322.
Housinger, M.
M. (1996). Trap a surprise in an isosceles trapezoid. Mathematics
Teacher, 89, 12-14.
Kilmer,
J. E. (1988). Triangles of equal area and perimeter and inscribed circles.
Mathematics Teacher, 81, 65-70.
Lightner, J.
E. (1975). A new look at the "Center" of a triangle. Mathematics
Teacher, 68, 612-615.
Reinford, D.
J. (1993). The generality of a simple area formula. Mathematics
Teacher, 86, 738-740.
Schor , H.
(1963). Altitudes, medians, angle bisectors and perpendicular bisectors of
the sides of a triangle. Mathematics
Teacher, 56, 105-106.
Sevier, F. A.
C. (1952). A new proof of an old theorem. Mathematics
Teacher, 45, 121-122. |
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