Calculate a, b, c and d. Calculate the value of m. Calculate the size of: (a) (b) Calculate the value of p Calculate the value of y. Determine the size of x in each of the following diagrams. Show all steps of working and give reasons. Worksheet: Term 2 Grade 9 Week 1 Lesson 3 Mental Maths
Define the following: a) Corresponding angles b) Alternate angles c) Co-interior angles d) Parallel lines Class work 1. a) Identify corresponding angles and alternate angles. b) Are corresponding angles and alternate angles in this figure equal. Explain. Find the sizes of an angle marked with reasons. For which value of x are AB and CD parallel? Show all steps of your working and give reasons when using any geometrical theorem. Homework
Find the size of angle in each of the following sketches. Show all necessary steps and give reasons. Find the size of the angles labelled and in the sketch below, giving reasons Is AC // DF? Explain your answer by means of a proof. Worksheet: Term 2 Grade 9 Week 2 Lesson 4 Class work
1.Define the following: bisect perpendicular line segment Activity 1 Bisecting a line segment with a ruler. Activity 2 Bisecting a line segment with a ruler and a compass. Activity 3 Constructing a 45 angle Homework follows at the end of term 2 lesson 2 Worksheet: Term 4 Grade 9 Week 3 Lesson 3 Mental Maths Class work Homework
Learners should bring their cell phones to class for this lesson to use for research purposes only! Learners bring chart paper and colours to class to help them prepare a presentation on the properties of triangles to the class. Continue researching and making good presentations for the class on the properties of triangles Worksheet: Term 2 Grade 9 Week 3 Lesson 4 Mental Maths Class work Homework
1.What is a four-sided figure called? 2.What is a five-sided figure called? 3.What is an octagon? 4.Name one special property of a square and a rectangle 5.Name a unique property of a trapezium Use the following to show the properties of quadrilaterals: The diagonals AC and BD of parallelogram ABCD intersect at point E. Measure the length of the diagonals. Measure the length of the line segments from E to each corner (BE, DE, CE, and AE). Use your protractor to measure the angles that the diagonals make with each other. What do you notice? Make a conjecture about the diagonals of a parallelogram. Homework follows at the end of term 2 week 3 lesson 2 Worksheet: Term 2 Grade 9 Week 4 Lesson 2 Mental Maths Class work Homework
Thandi says that shapes a, b, c, d, e and f are all parallelograms. Is she correct? Give a reason. Worksheet: Term 4 Grade 9 Week 3 Lesson 5 Mental Maths Class work Homework This is a continuation lesson Properties of a kite: The lesson will continue so allow learners to complete classwork
Mental Maths Class work Homework If the two angles of one triangle are equal to two angles of another triangle, then the two triangles are similar (AA). Three sides are in the same proportion: if the sides of the two triangles are in the same proportion, the triangles are similar. Decide whether the following set of triangles are similar. Give reasons for your decision. Decide whether the following set of triangles are similar. Give reasons for your decision. Worksheet: Term 2 Grade 9 WEEK 5 Lesson 8