NNAT Mirror Images and Rotations 2

Question 1

A triangle points to the upper-right corner. When reflected across a vertical line, where does the triangle point?

Accepted Answer

Upper-left corner

Answer

A vertical reflection flips left and right, so upper-right becomes upper-left.

Question 2

A shape is rotated 90° clockwise. If you then rotate it 90° counterclockwise, what is the result?

Accepted Answer

The original shape orientation

Answer

A 90° clockwise rotation followed by a 90° counterclockwise rotation cancels out, returning the shape to its original orientation.

Question 3

An arrow points left. After a 180° rotation, which direction does it point?

Accepted Answer

Right

Answer

A 180° rotation reverses direction completely, so left becomes right.

Question 4

Which property of a shape is preserved when it is reflected across a line?

Accepted Answer

Size and shape

Answer

Reflections preserve size and shape (they are isometries) but change orientation and handedness.

Question 5

A flag with a star in the top-left corner is placed in front of a mirror. Where does the star appear in the reflection?

Accepted Answer

Top-right corner

Answer

A vertical mirror reflection swaps left and right, moving the star from top-left to top-right.

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