Simple Drawings and Figures Flashcards

A figure shows a star with one point aimed directly upward. After two successive 90° clockwise rotations, where does that point aim?

Answer: Down

Two 90° clockwise rotations total 180°, sending the top point directly downward.

Which transformation changes the size of a figure?

Answer: Dilation

Dilation scales a figure by a factor, enlarging or reducing it, while the other three are rigid motions that preserve size.

A right-pointing arrow is reflected across a horizontal axis. The result is:

Answer: A right-pointing arrow (unchanged)

Reflecting a horizontal arrow across a horizontal axis flips it top-to-bottom but leaves its left-right direction unchanged.

A simple closed figure has 0 lines of symmetry and rotational symmetry of order 1 only. This describes a:

Answer: Scalene triangle

A scalene triangle has no equal sides, no lines of symmetry, and only trivial (360°) rotational symmetry.

When comparing a target figure to answer choices on the SIFT, one choice appears to be the target flipped, not rotated. You should:

Answer: Eliminate it, because it is a reflection and not a rotation

On the SIFT Simple Drawings subtest, reflections (mirror images) are distractors—only the correctly rotated figure is the right answer.

A figure consists of a circle with a single dot in the upper-left quadrant. After a 270° clockwise rotation, the dot is in the:

Answer: Upper-right quadrant

270° clockwise equals 90° counter-clockwise, moving the dot from upper-left to upper-right.

Two figures are congruent if and only if one can be mapped to the other by:

Answer: A rigid motion (translation, rotation, or reflection)

Congruence is defined by the existence of a rigid motion (isometry) mapping one figure exactly onto the other.