Pretest

Question 1

Which figure shows a line of reflectional symmetry for the letter T?

Revolt · Accepted Answer

Image with description A letter T has a dashed vertical line passing through the center of the top bar and the vertical part of the T.

Question 2

Which angle of rotation is an angle of rotational symmetry for all figures?

Revolt · Accepted Answer

360 degrees

Question 3

Which set of side lengths represents a triangle with 3 lines of reflectional symmetry?

Revolt · Accepted Answer

5, 5, 5

Question 4

Which statements are true about the lines of symmetry of a regular pentagon? Choose three correct answers.

Revolt · Accepted Answer

Every line bisects a side.; Every line bisects a vertex angle.; Every line is perpendicular to a side.

Question 5

Which figure has an order 3 rotational symmetry?

Revolt · Accepted Answer

equilateral triangle

Question 6

Which triangle has 0 reflectional symmetries?

Revolt · Accepted Answer

Image with description A right triangle has a vertical left side, a horizontal bottom side, and a slanted side. The left side has double tick marks, the bottom side has one tick mark, and the slanted side has triple tick marks. A right-angle marker is shown at the lower-left angle, one arc mark is shown at the upper-left angle, and double arc marks are shown at the lower-right angle.

Question 7

How can a regular hexagon be folded to show that it has reflectional symmetry?

Revolt · Accepted Answer

Fold the hexagon along a line that bisects two vertex angles.

Question 8

What is the smallest angle of rotational symmetry for a square?

Revolt · Accepted Answer

90 degrees

Question 9

Which type of triangle will always have at least 1-fold reflectional symmetry?

Revolt · Accepted Answer

isosceles triangle

Question 10

If a quadrilateral has exactly 2 lines of symmetry, and both are angle bisectors, then which statement would be true?

Revolt · Accepted Answer

The figure could be a rhombus because the 2 lines of symmetry bisect the angles.

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