Unit Test — Unit test Answers
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The base of the pyramid is a rectangle that is not a square. Which statements correctly describe the symmetry of the pyramid? Check all that apply.
A
The pyramid has four planes of symmetry.B
The pyramid has two planes of symmetry.C
An axis of symmetry passes through the vertex and is perpendicular to the base.D
An axis of symmetry passes through the vertex and through one of the triangular faces of the pyramid.E
An angle that measures 90º is an angle of rotation for an axis of symmetry for the pyramid.F
An angle that measures 45º is an angle of rotation for an axis of symmetry for the pyramid.22
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The longest side of an isosceles obtuse triangle measures 20 centimeters. The other two side lengths are congruent but unknown.What is the greatest possible whole-number value of the congruent side lengths?
A
9 cmB
10 cmC
14 cmD
15 cm23
Which diagram has all the correct lines of reflectional symmetry for the rectangle?
A
A rectangle is folded diagonally on both corners.
B
A rectangle is folded by a vertical and horizontal line going through its center.
C
A rectangle is folded 4 ways. It is folded horizontally, vertically, and diagonally on both corners.
D
A rectangle is folded 4 ways. It is folded diagonally at each midpoint of every side.
24
Which statement describes the order of rotational symmetry for an isosceles triangle?
A
An isosceles triangle has an order 0 rotational symmetry because there is no angle at which it can be rotated onto itself.B
An isosceles triangle has an order 1 rotational symmetry because it does not have all congruent angles.C
An isosceles triangle has an order 2 rotational symmetry because it has 1 pair of congruent angles.D
An isosceles triangle has an order 3 rotational symmetry because it has 3 angles.25
A regular decagon has 10 sides.
A
5B
10C
15D
2026
Question text not available
A
axis of reflectionB
axis of symmetryC
plane of reflectionD
plane of symmetryDid you find these answers helpful?
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