Fun with Angles and Polygons

1
Fun with Angles and Polygons

• A unit for learning about geometry
• Ms. Collette Robitaille

2
Introduction to Geometry

• Unit 1 Angles (2 days)
• Unit 2 Triangles (2 days)
• Unit 3 Quadrilaterals (2 days)
• Geometry Webquest (5 days)
• Review Activities (3 days)
• Test (1 day)
• This is a 3 week unit of instruction.

3
Unit One Exploring Angles

• Can you name the following angles?

obtuse
acute
right
straight
Click on the angle to reveal its name.
4
Angle Information

• Acute Angles measure less than 90º
• Right Angles measure exactly 90º
• Obtuse Angles measure more than 90º but less
  than 180º
• Straight Angles measure exactly 180º

5

• Can you think of a way to remember the names for
  each angle?

6
Angles Task

• Activity
• For this activity, you will be paired up with a
  partner to visit the following website.
• After clicking below, skip the intro and click on
  the Make the Angle Game.
• You and your partner must make 10 angles and
  record them on a sheet of paper.
• Once you have recorded 10 angles, tell what type
  of angle it is.
• http//www.amblesideprimary.com/ambleweb/mentalmat
  hs/protractor.html

7
Unit One Angles Quick Check

• Question 1
• An acute angle is greater than 90º.
• True
• False

8
Unit One Angles

• OOPS!!!!!
• Remember an acute angle is a cute little angle.
• Try Again

9
Unit One Angles

• Congratulations!!!!!
• An acute angle is less than 90º.

10
Unit One Angles Quick Check

• Question 2
• An obtuse angle is greater than
• 90º but less than 180º.
• True
• False

11
Unit One Angles Quick Check

• OOPS!!!!!
• Better check again. Obtuse angles are almost
  right and not quite straight.
• Try Again

12
Unit One Angles Quick Check

• Congratulations!!!!
• An obtuse angle is between 90ºand 180º.

13
Unit One Angles Quick Check

• Question 3
• A straight angle measures 180º.
• True
• False

14
Unit One Angles Quick Check

• OOPS!!!!!
• Remember. A straight angle looks like a straight
  line.
• Try Again

15
Unit One Angles Quick Check

• Congratulations!!!!
• A straight angle measures 180º and looks like a
  straight line.

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Unit One Angles Quick Check

• Question 4
• A right angle does not measure
• 90º.
• True
• False

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Unit One Angles Quick Check

• OOPS!!!!!
• A right angle looks like the corner of a piece of
  paper.
• Try Again

18
Unit One Angles Quick Check

• Congratulations!!!!
• A right angle does measure exactly 90º.

19
Unit Two Triangles

• Can you identify theses triangles by their
  angles?

Right
acute
obtuse
Click on the angle to check your answer.
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Unit Two Triangles

• Right Triangles - have exactly one right angle.
• Acute Triangles all angles are less than 90º.
• Obtuse Triangles - have exactly one angle
  greater than 90º.

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Unit Two Triangles

• Can you identify these triangles by their sides?

isosceles
scalene
equilateral
Click on the triangle to check your answer.
22
Unit Two Triangles

• Isosceles Triangles - two sides are of equal
  length
• Scalene Triangles - no sides are equal in length
• Equilateral Triangles - all sides are of equal
  length

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Triangles Task

• For this task, you and your partner, must
  complete the activity on the webpage listed
  below. Review the triangles and then click
  Triangles Quiz. Write your answers on a sheet of
  paper.
• Triangles Review

24
Unit Three Quadrilaterals

• Can you identify the following quadrilaterals?

parallelogram
rectangle
square
trapezoid
rhombus
Click on the quadrilateral to check your answer.
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Unit Three Quadrilaterals

• Parallelograms - 4-sided figure, opposite sides
  are parallel and congruent
• Rectangle 4 sided figure with 4 right angles
  and opposite side congruent
• Square 4 sided figure with 4 right angles and 4
  congruent sides
• Rhombus 4 sided figure, all sides are congruent
• Trapezoid 4 sided figure with one pair of
  parallel lines

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Quadrilaterals Task

• For this task, you and your partner should visit
  the following website.
• Using the virtual geoboard you and your partner
  will need to construct each of the five
  quadrilaterals we have discussed.
• To complete the assignment, on a sheet of paper,
  tell how many geobands were needed to create each
  quadrilateral.
• http//matti.usu.edu/nlvm/nav/frames_asid_129_g_3_
  t_3.html

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Unit Three Quadrilaterals Quick Check

• Question 1
• A rectangle is a four sided figure with 4
• congruent sides.
• True
• False

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Unit Three Quadrilaterals

• OOPS!!!!!!!!
• Think about it. A rectangle looks like a long
  box.
• Try Again

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Unit Three Quadrilaterals

• Great!!!!!!!!!
• You remembered that a rectangle
• has 2 parallel sides, 4 right
• angles, and opposite sides are
• congruent.

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Unit Three Quadrilaterals Quick Check

• Question 2
• A rhombus has four congruent sides.
• True
• False

31
Unit Three Quadrilaterals

• OOPS!!!!!!!!
• Remember that a rhombus looks like a kite or a
  diamond.
• Try Again

32
Unit Three Quadrilaterals

• HOORAY!!!!!!
• You remembered that a rhombus
• looks like an italic square and all 4
• sides are congruent.

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Unit Three Quadrilaterals Quick Check

• Question 3
• A square is a quadrilateral with only two right
• angles.
• True
• False

34
Unit Three Quadrilaterals

• OOPS!!!!!!!!!
• A square has all sides congruent and all angles
  congruent.
• Try Again

35
Unit Three Quadrilaterals

• Nice Job!!!!!!!
• You knew that a square has four
• equal sides and four equal angles.

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Unit Three Quadrilaterals Quick Check

• Question 4
• A trapezoid is a four sided figure with one set
• of parallel sides.
• True
• False

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Unit Three Quadrilaterals

• OOPS!!!!!!
• Think of the tables in a classroom. It looks like
  a triangle without the top.
• Try Again

38
Unit Three Quadrilaterals

• AWESOME!!!!!!!
• A trapezoid has exactly one set of
• parallel sides.

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Unit Three Quadrilaterals Quick Check

• Question 5
• A parallelogram has two sides that are
• parallel and opposite angles are congruent.
• True
• False

40
Unit Three Quadrilaterals

• OOPS!!!!!!
• Remember that a parallelogram looks like an
  italic rectangle.
• Try Again

41
Unit Three Quadrilaterals

• Nice Work!!!!!
• A parallelogram is a 4 sided figure
• with opposite sides parallel and
• opposite angles congruent.

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Unit Four Geometry Web Quest
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Unit Four Geometry Web Quest

• For this part of the unit I would like for you
  and your partner to explore geometry using the
  internet.
• There are two web quests listed below.
• Follow the directions for each and turn in your
  completed project. Have fun!!!
• Web Quest 1
• Web Quest 2

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Unit Review

• Go back through the slide show to complete the
  review sheet given to you.
• Remember to look at the quizzes for possible
  answers.
• Enjoy your time using the interactive unit
• Test tomorrow on our Introduction to Geometry.