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JSS1: MATHEMATICS - 2ND TERM

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  1. Algebraic Processes | Week 1
    4 Topics
    |
    1 Quiz
  2. Simplification of Algebraic Expressions | Week 2
    4 Topics
    |
    1 Quiz
  3. Simplification of Algebraic Expressions 2 (Use of Brackets) | Week 3
    4 Topics
    |
    1 Quiz
  4. Simple Equations | Week 4
    1 Topic
    |
    1 Quiz
  5. Simple Equations II | Week 5
    3 Topics
    |
    1 Quiz
  6. Plane Shapes I | Week 6
    5 Topics
    |
    2 Quizzes
  7. Plane Shapes II | Week 7
    7 Topics
    |
    1 Quiz
  8. Plane Shapes III | Week 8
    7 Topics
    |
    1 Quiz
  9. Decimals and Percentages I | Week 9
    2 Topics
    |
    1 Quiz
  10. Decimals and Percentages II | Week 10
    3 Topics
    |
    1 Quiz



Lesson 6, Topic 2
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Triangle – Properties of Plane Shapes

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Topic Content:

  • Properties of a Triangle
  • Types of Triangles
  • Classification of Triangles
  • Types of Triangles Based on Sides

A triangle is a three-dimensional plane figure with three angles. In a triangle, the three interior angles always add up to 180°.

Properties of a Triangle:

a. A triangle has three sides, three angles, and three vertices.

b. A sum of the angles in a triangle = 180°

triangle - plane shapes

A + B + C = 180°

c. The height h” of a triangle is the length of a line segment that connects the baseb” to the opposite vertex and makes a 90° angle with the base.

The base of a triangle refers to any side of a triangle, which is perpendicular (makes a 90° angle) to its height or altitude.

Screenshot 2022 12 10 at 11.04.36

 

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