Geometry - Mlle Ford's Grade 5C · 2018-09-05 · Lesson 3-2: Measuring and Constructing Angles...
Transcript of Geometry - Mlle Ford's Grade 5C · 2018-09-05 · Lesson 3-2: Measuring and Constructing Angles...
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GeometryUnit 3
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Lesson 1: Naming and Sorting Polygons by Sides
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Naming Polygons…
We can name polygon’s by the number of sides…
1) Triangle- 3 sides2) Pentagon- 5 sides3) Hexagon- 6 sides4) Octagon- 8 sides
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Naming Polygons…
By their vertices..
Label each vertex with different capital letters.
A
B C
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Naming Polygons… By the number of equal sides…
1) An equilateral triangle has all equal sides2) An isosceles triangle has 2 equal sides3) A scalene triangle has no equal sides
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https://www.brainpop.com/math/geometryandmeasurement/polygons/
https://www.brainpop.com/math/geometryandmeasurement/typesoftriangles/
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Naming and Sorting Polygons by Sides- Questions
(Questions glued in notebooks)
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Lesson 2: Measuring and Constructing Angles
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We name angles according to their size..
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We name angles according to their size..
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How to use a protractor… https://www.mathsisfun.com/geometry/protractor-using.html
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Lesson 3-2: Measuring and Constructing Angles
(Questions glued in notebooks)1. Measure each angle with a protractor.Name each angle. Use the words acute, obtuse, and right.
2. Use a ruler and a protractor. Construct an angle with each measure.a) 15° b) 105° c) 75° d) 165°
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Lesson 3: Naming and Sorting Polygons by Angles
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Questions: Naming and Sorting Polygons by Angles
(Questions glued in notebooks)
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Lesson 4: Constructing Triangles
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Questions: Constructing Triangles (Questions glued in notebooks)
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Lesson 5: Making Nets
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What is a net? A pattern that you can cut and fold to make a model of a solid shape.
This is a net of a cube.
Also means what is left after all deductions have been made.
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Let’s Explore... https://www.mathsisfun.com/definitions/net.html
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Questions: Making Nets
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Let’s Review!
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