Coach 31 Shapes

What is true about the shape?

• The shape is a polygon because it is open.

• The shape is not a polygon because it is open.

• The shape is a polygon because it is closed and has straight sides.

• The shape is not a polygon because it is closed and has straight sides.

Mindy wrote these clues about a shape:

I am a quadrilateral. I do not have any parallel sides.

My opposite sides are not the same size. I do not have any right angles.

Which shape did she draw?

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• 
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How many vertices does each shape have? 

Groups:

(a) 4

,

(b) 5

,

(c) 6

,

(d) 8

• quadrilateral

• rectangle

• octagon

• trapezoid

• hexagon

• pentagon

Which figures are polygons?

Select three correct answers.

What kind of shape is the figure shown? 

Pick three choices below.

Kay made a mistake while sorting shapes.

Which group has a shape that does not match the description?

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Michael is sorting polygons into groups.. 

Pick two more shapes that he could add to Group 2.

Pick three statements that are true.

• All of the figures are polygons.

• Figure F and B are rectangles.

• Figure C is a square.

• Figure A and D are parallel-ograms.

• Figure E and F are trapezoids.

Pick two figures that are rhombuses.

Clay and Dana both looked at the shape.

Clay said that it is a rhombus.

Dana said that it is a square.

Which statement best explains who is right? 

• Only Clay, because it has 4 equal angles.

• Only Dana, because it has 4 equal sides.

• They are both wrong, because it is a trapezoid.

• They are both right, because rhombuses and squares both have 4 sides.