Question

from unit 1, lesson 8 select the shape that has 180° rotational symmetry. a rhombus b trapezoid c isosceles trapezoid d quadrilateral

Explanation:

Step1: Recall rotational - symmetry concept

A shape has 180 - degree rotational symmetry if it looks the same after a 180 - degree rotation about its center.

Step2: Analyze each option

• A rhombus: When a rhombus is rotated 180 degrees about its center, it coincides with its original position.
• A trapezoid (non - isosceles): In a general trapezoid, a 180 - degree rotation will not result in the shape looking the same as the original.
• An isosceles trapezoid: An isosceles trapezoid does not have 180 - degree rotational symmetry. It has reflectional symmetry but not 180 - degree rotational symmetry.
• A general quadrilateral: A general quadrilateral does not have 180 - degree rotational symmetry.

Answer:

A. rhombus