Geometry Lesson 2 Congruency Symmetry 1 CONGRUENCY 2

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Geometry Lesson 2: Congruency & Symmetry

Geometry Lesson 2: Congruency & Symmetry

1. CONGRUENCY 2

1. CONGRUENCY 2

What does CONGRUENT mean? CONGRUENT - Two objects that have the same SIZE and

What does CONGRUENT mean? CONGRUENT - Two objects that have the same SIZE and SHAPE - When placed over top of each other (SUPERIMPOSED – big Math word of the day ), the shapes match perfectly. - They are IDENTICAL. CLICK HERE to learn more about CONGRUENCY or click the video to the right 3 EXAMPLES OF CONGRUENT SHAPES:

YOUR TURN! 1) Look at the shapes to the right. Colour the pairs of

YOUR TURN! 1) Look at the shapes to the right. Colour the pairs of congruent shapes with the same colour. This graphic can be downloaded from the website for printing and colouring by CLICKING HERE. 4

YOUR TURN! 2) Now see if you can trick a sibling or parent. Make

YOUR TURN! 2) Now see if you can trick a sibling or parent. Make and cut out a whole bunch of different shapes (at least 4 congruent pairs and 4 not congruent pairs). Have your parent or sibling try to find the congruent ones, make sure you explain what congruent means to them first and mix up the shapes real well. Have fun! 5

2. SYMMETRY 6

2. SYMMETRY 6

What is SYMMETRY? ◆ When an object looks the exact same on one side

What is SYMMETRY? ◆ When an object looks the exact same on one side as the other. ◆ To see if an object is SYMMETRICAL, you draw a LINE OF SYMMETRY or a line dividing an object in half to show a perfect match on each side. 7

More on Symmetry CLICK HERE to learn more about SYMMETRY or click the video

More on Symmetry CLICK HERE to learn more about SYMMETRY or click the video to the right. 8

Let’s try it! Identifying SYMMETRICAL shapes 3) 2) 1) Which of these shapes are

Let’s try it! Identifying SYMMETRICAL shapes 3) 2) 1) Which of these shapes are SYMMETRICAL? . 4) 9 5) 6) 7)

Let’s try it! Your turn! 2) Create at least 5 SYMMETRICAL shapes. They can

Let’s try it! Your turn! 2) Create at least 5 SYMMETRICAL shapes. They can be any shape you want, as long as they are SYMMETRICAL. 3) Draw at least 1 LINE OF SYMMETRY on the shapes you created. Be careful to make sure it is a true LINE OF SYMMETRY. – how would you check to make sure? 10

REVIEW GAME CONGRUENCY Write a congruency statement usingREVIEW GAME CONGRUENCY Write a congruency statement using
Symmetry Line Symmetry n Shape has line symmetrySymmetry Line Symmetry n Shape has line symmetry
3 1 Symmetry Symmetry All Around Us Symmetry3 1 Symmetry Symmetry All Around Us Symmetry
Plane Symmetry Plane Symmetry A plane of symmetryPlane Symmetry Plane Symmetry A plane of symmetry
Symmetry Monarch butterfly bilateral symmetry mirror symmetry WheneverSymmetry Monarch butterfly bilateral symmetry mirror symmetry Whenever
Symmetry Concept 39 symmetry line of symmetry rotationalSymmetry Concept 39 symmetry line of symmetry rotational
Symmetry Monarch butterfly bilateral symmetry mirror symmetry 153Symmetry Monarch butterfly bilateral symmetry mirror symmetry 153
symmetry line of symmetry rotational symmetry center ofsymmetry line of symmetry rotational symmetry center of
SYMMETRY LINE SYMMETRY A line symmetry occurs inSYMMETRY LINE SYMMETRY A line symmetry occurs in