Question

1. five polygons are shown. select all the figures with 180° rotational symmetry. (3 answers) image a: right, isosceles triangle image b: rectangle image c: square image d: regular pentagon image e: regular hexagon select all the figures with reflectional symmetry.

Explanation:

Step1: Recall rotational - symmetry concept

A figure has 180 - degree rotational symmetry if it looks the same after a 180 - degree rotation.

Step2: Analyze each polygon

A right - isosceles triangle doesn't have 180 - degree rotational symmetry. A rectangle, square, and regular hexagon do. A regular pentagon doesn't.

Answer:

Image B: rectangle, Image C: square, Image E: regular hexagon