Practice with Rotations
Tic-Tac-Toe Questions
Practice with Rotations
• Divide the class into two teams, named “X” and “O”.
• Draw a large tic-tac-toe grid on the board.• Take turns asking questions of each team. The
answer must include an explanation.– If answered correctly, they
may place their symbol on
the game board.– If answered incorrectly, the
other team may place their
symbol on the game board.
• The first team with 3 symbols
in a row wins the game.
Question 1
• TRUE or FALSE?• This pinwheel is spinning in a counterclockwise
direction.
• WHY?
Question 1
• FALSE• This pinwheel is spinning in a counterclockwise
direction.
• WHY? The pinwheel is spinning in the same direction as the hands of a clock.
Question 2
• TRUE or FALSE?• The number of degrees separating the center
lines of the blades on this fan is 60°.
• WHY?
Question 2
• FALSE• The number of degrees separating the center
lines of the blades on this fan is 60°.
• WHY? There are four blades on the fan. Divide 360° by 4. The blades are 90° apart.
Question 3
• TRUE or FALSE?• This drawing has been rotated 180°.
• WHY?
Question 3
• FALSE• This drawing has been rotated 180°.
• WHY? The rotation is 90°.
Question 4
• TRUE or FALSE?• This triangle has been rotated in a clockwise
direction.
• WHY?
Question 4
• TRUE• This triangle has been rotated in a clockwise
direction.
• WHY? Notice the movement of A to A’ and so on. It is in a clockwise direction.
Question 5
• TRUE or FALSE?• Fish 2 is a 45° counterclockwise rotation of Fish 1.
• WHY?
Question 5
• TRUE• Fish 2 is a 45° counterclockwise rotation of Fish 1.
• WHY? Remember 45° is half of a 90° rotation.
Question 6
• TRUE or FALSE?• Polygon A'B'C'D' is a 180 degree
counterclockwise rotation of polygon ABCD.
• WHY?
Question 6
• TRUE• Polygon A'B'C'D' is a 180 degree
counterclockwise rotation of polygon ABCD.
• WHY? Remember the letters which label the diagram do not have to be rotated.
Question 7
• TRUE or FALSE?• Seahorse 2 is a 90° counterclockwise of
Seahorse 1.
• WHY?
Question 7
• FALSE• Seahorse 2 is a 90° counterclockwise of
Seahorse 1.
• WHY? The rotation is 90° clockwise or 270° degrees counterclockwise.
Question 8
• Graph ΔABC under the following rotations:– R90°(ΔABC)=ΔA’B’C’
– R180°(ΔABC)=ΔA’’B’’C’’
– R270°(ΔABC)=ΔA’’’B’’’C’’’
Question 8
• Graph ΔABC under the following rotations:– R90°(ΔABC)=ΔA’B’C’
– R180°(ΔABC)=ΔA’’B’’C’’
– R270°(ΔABC)=ΔA’’’B’’’C’’’
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