Website owner: James Miller
Plane Geometry. Definitions, axioms, postulates, theorems. Straight, complementary, right, vertical, acute, obtuse angles. Equilateral, isosceles, scalene, right, acute, obtuse triangle. Quadrilateral, parallelogram, rhombus, trapezoid. Transversal. Arc, chord of a circle.
Plane geometry. Formulas for area, perimeter, etc.
RULES FOR PROVING THEOREMS. In proving any theorem we are allowed to use any of the axioms, postulates, or any theorem that we have already proven. ABBREVIATIONS. s.a.s side, angle, side (Two triangles are congruent if two sides and the included angle of one are equal to two sides and the included angle of the other i.e. s.a.s. = s.a.s.) a.s.a. angle, side, angle s.s.s. side, side, side c.p.c.t.e. corresponding parts of congruent triangles are equal PROOFS OF THEOREMS
Locus theorems 1-6
Locus theorem 7
Proportion theorems 1-8
The above proofs are my own from my high school geometry course.