Shape Attributes

Geometry: Classify 2-D Shapes

Open Ended

Take a close look at this object. List all the things that you see. Think of color, size, or any part of this object.

Things that an object has is known as its attributes.

Attributes can describe the color, size, and any part of an object.

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Open Ended

List all the things that this shape has. In other words, list its attributes.

Other attributes we use to describe shapes are:

Sides

Equal Sides

Parallel Sides

Right Angles

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Sides are the lines that make up the border of a shape. How many lines does this shape have.

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How many sides does this shape have?

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Equal sides are sides that have the same length. How many equal sides does this square have?

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How many equal sides does this triangle have?

A set of parallel sides are sides opposite from each other, that will never cross, no matter how much longer the sides are extended.

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Multiple Choice

How many sets of parallel sides does this shape have?

• 2 sets of parallel sides

• 1 set of parallel sides

• 0 set of parallel sides

• 3 sets of parallel sides

There are 2 sets of parallel sides.

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Multiple Choice

How many sets of parallel sides are in this shape?

• 1 set of parallel sides

• 2 sets of parallel sides

• 3 sets of parallel sides

• 0 sets of pararllel sides

There is just 1 set of parallel sides in that shape (the green lines). Notice how the other opposite sides cross when their sides are extended, so those are not considered parallel.

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Right angles are corners of a shape that is exactly 90 degrees meaning the corner forms a perfect L or a perfect spot for a square.

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How many right angles does this shape have?

There are 4 right angles in this shape.

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How many right angles are in this shape?

There is only one right angle. The other coners do not form a perfect L.

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Open Ended

List attributes for this shape. Be sure to include the following types of attributes: sides, parallel sides, equal sides, and right angles.