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Geometry Reflective Portfolio Unit #5: Triangle congruence At the conclusion of each unit, you will create a one page study sheet. You must write the title of the unit and its number. All future study sheets will need to have the same sections! Section #1: Vocabulary (words and/or diagrams) Define each: Triangle classifications: Angles: Sides: Acute triangle Obtuse triangle Right triangle Equiangular Angle bisector Midpoint Line segment bisector Perpendicular lines Altitude Median Vertical angles Supplementary angles Linear pair of angles Complementary angles Vertex angle of an isosceles triangle Base angles of an isosceles triangle Equilateral triangle Isosceles triangle Scalene triangle Section #2: Formulas/Equations/Theorems Write out the Triangle interior angle sum theorem: Triangle Exterior angle Theorems The sum of the measures of an exterior angle and its adjacent interior angle is __________. The sum of the measures of all 3 exterior angles is______. The measure of an exterior angle of a triangle is equal to___________________________________________________________. Write out the Triangle inequality theorem: In a triangle, the largest angle is across from the__________________________ Ina triangle, the shortest side is across from the __________________________ Section #3: Key methods and concepts (write out the process and/or a solved example) Write the 4 theorems that prove 2 triangles are congruent: Write a 2 column proof for: Given: QS PR and QS bisects PQR Prove: PQS RQS