MATHEMATICS GRADE 9 UNIT 7 LESSON 1 REVISION ON CONGRUENCY OF TRIANGLES

Sets and Elements Set Description The Notion of Sets Operations on Sets Application Summary Revision on Natural Numbers and Integers Rational Numbers Irrational Numbers Real Numbers Application Revision on Linear Equation in One Variable Systems of Linear Equations in Two Variables Solving Non-linear Equations Applications of Equations SOLVING INEQUALITIES INTRODUCTION TO TRIGONOMETRY REGULAR POLYGONS Revision on Linear Inequalities in One Variable Systems of Linear Inequalities in Two Variables Inequalities Involving Absolute Value Quadratic Inequalities Applications of Inequalities Revision on Right-angled Triangles Trigonometric Ratios Sum of Interior Angles of a Convex Polygon Sum of Exterior Angles of a Convex Polygon Measures of Each Interior Angle and Exterior Angle of a Regular Polygon Properties of Regular Polygons CONGRUENCY AND SIMILARITY VECTORS IN TWO DIMENTIONS Statistics and Probability Revision on Congruency of Triangles Definition of Similar Figures Theorems

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Two equilateral truangles are congruent ????