Question

which shapes have exactly 4 vertices? drag them to the box. 4 vertices

Explanation:

Step1: Recall vertex definition

A vertex is a corner - point of a shape.

Step2: Count vertices of each shape

The blue hour - glass - like shape has 4 vertices. The orange triangle has 3 vertices. The purple pentagon has 5 vertices. The red square has 4 vertices. The blue trapezoid has 4 vertices.

Answer:

The blue hour - glass - like shape, the red square, the blue trapezoid