## About

GEOMETRY OF STRAIGHT LINES Angle relationships • Revise and write clear descriptions of the relationship between angles formed by intersecting lines and parallel lines cut by a transversal Solving problems • Solve geometric problems using the relationships between pairs of angles described above GEOMETRY OF 2D SHAPES AND CONSTRUCTION OF GEOMETRIC FIGURES Classifying 2D shapes • Revise properties and definitions of triangles in terms of their sides and angles, distinguishing between equilateral, isosceles triangles and right-angled triangles Constructions • Investigate the angles in a triangle, focusing on the relationship between the exterior angle of a triangle and its interior angles Classifying 2D shapes • Revise and write clear definitions of quadrilaterals in terms of their sides, angles and diagonals, distinguishing between parallelogram, rectangle, square, rhombus, trapezium and kite Constructions • Investigate sides and angles. and diagonals in quadrilaterals, focusing on exploring the sum of the interior angles of polygons, the diagonals of rectangles, squares, parallelograms, rhombi and kites Similar and congruent triangles • Through investigation, establish the minimum conditions for congruent triangles • Through investigation, establish the minimum conditions for similar triangles Constructions • Explore the minimum conditions for two triangles to be congruent Solving problems • Solve geometric problems involving unknown sides and angles in triangles and quadrilaterals, using known properties of triangles and quadrilaterals, as well as properties of congruent and similar triangles • The sum of the interior angles of triangles • Identify and write clear definitions of types of triangles focusing on sides and angles

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