Coxeter - Figure 1.6 D (left)
A, B, C, D are any four collinear points. R is a point outside the line and T, Q, W are the sections by an arbitrary line through D. Z is the intersection of AQ and RC.
Measuring and constructing angles
Modul 7_Jusiarni, S.Pd_SMAN 3 SOPPENG
Triangle with given sides (SSS)
Triangle to Square Puzzle