angles are equal • if parallel lines cut by a transversal, then co-interior angles are 1.(a) 3t + 12° = 66° (vertically opposite angles) supplementary 3t = 66°- 12 The above 3t = 54 angles have to be identified t = 18 and named by learner (2) Calculate 45° + x + 40 = 180° (adjacent angles) X + 85 = 180° x = 95° INTRODUCTION 5 Min (a) a = 88° Vertically opposite angles (Mental maths) (b) = 62° Vertically opposite angles (c) c b + 88 + c = 180° adjacent angles on a straight line 62° + 88 ° + c = 180° 154° + c = 180° C = 26° (d) d = Vertically opposite angles d= 26°
1.(a) 3t + 12° = 66° (vertically opposite angles) 3t = 66°- 12 3t = 54 t = 18 (2) Calculate 45° + x + 40 = 180° (adjacent angles) X + 85 = 180° x = 95° angles are equal • if parallel lines cut by a transversal, then co-interior angles are supplementary The above angles have to be identified and named by learner INTRODUCTION (Mental maths) 5 Min (a) a = 88° Vertically opposite angles (b) = 62° Vertically opposite angles (c) c b + 88 + c = 180° adjacent angles on a straight line 62° + 88 ° + c = 180° 154° + c = 180° C = 26° (d) d = Vertically opposite angles d= 26°
Grade_8_Term_1_Lesson_Plans_Final.docx