Compass and straightedge constructions demonstrating the Triangle Sum and Base Angles Theorems. Duration_10_47
Compass and straightedge construction that uses a centroid to trisect a segment. Duration_7_33
Compass and straightedge construction of the inscribed and circumscribed circles of an obtuse triangle. Duration_13_34
Compass and straightedge construction of the Euler Line of a triangle, containing the circumcenter, the centroid, and the orthocenter. Duration_14_35
Compass and straightedge demonstration of the Triangle Inequality. Given two sides of a triangle, between what two segment lengths must the third side be? Duration_5_44
Find the unknown center of a given circle by constructing the circumcenter or the incenter of a triangle. Duration_9_50
User inputs two side lengths. Calculator determines the range of possible values for the third side length. Duration_6_56
User inputs three sets of noncollinear coordinates. Calculator determines if it is possible to create a triangle using the points, and graph the resulting triangle using the LINE( command found in the DRAW menu. Code your program in such a way that the graph screen displays the entirety of the user’s triangle. Duration_9_21
User inputs three sets of noncollinear coordinates. Calculator determines if the triangle formed by joining the user’s coordinates is scalene, isosceles, or equilateral. Duration_15_14
User inputs three sets of noncollinear coordinates. Calculator graphs the shortest median. Duration_22_56