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Transcript

MEP Jamaica: STRAND H UNIT 31 Angles and Symmetry: Lesson Plans STRAND I: Geometry and Trigonometry UNIT 31: Angles and Symmetry Lesson 31.3 Angle Geometry CSEC Objective: angle geometry Lessons Aims: After this lesson, the student should: i) understand and be able to apply the angle facts for points, lines, triangles and quadrilaterals. Prerequisite Knowledge: Angles, points, lines, triangles and quadrilaterals Key Vocabulary: - Challenges: Although this should again be familiar to students, weaker students will struggle to have all the known results at their fingertips. Teaching Notes: Ensure that all students are familiar with the angle facts for point ( 360), line ( 180 ), angles in triangle, equilateral triangle ( 60) and quadrilateral ( 360). PowerPoints: PP 31.2 homework Review Introduction Exercises Review answers Exercises Review answers Mental Test Review answers Closing activity Homework Lesson Plans: DS 31.2 ST 31.3, Q1 (some of) ST 31.3, Q3 or Q4 M31 ST 31.3, Q10 ST 31.3, Q8 and Q11 Relevant CSEC Questions: MC Q1, Q2, Q4 RT Q4 and Q5 Glossary of Terms: Angles at a Point Angles at a point will always add up to 360. It does not matter how many angles are formed at the point – their total will always be 360. Angles on a Line Any angles that form a straight line add up to 180 . Angles in a Triangle The angles in any triangle add up to 180 . Angles in an Equilateral Triangle In an equilateral triangle all the angles are 60 and all the sides are the same length. Angles in an Isosceles Triangle In an isosceles triangle two sides are the same length and the two base angles are the same size. Angles in a quadrilateral The angles in any quadrilateral add up to 360. CIMT and e-Learning Jamaica