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  2. Decagon | Definition, Sides & Shape - Lesson - Study.com

    study.com/academy/lesson/decagon-definition-shape.html

    A decagon is a polygon with ten sides. Polygons are closed two-dimensional shapes with straight lines. This means polygons include triangles, squares, and decagons, but not circles or ovals. The ...

  3. What is a 10-sided 3D shape called? | Homework.Study.com

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    A polygon is a two-dimensional, or flat shape, that has the same number of straight sides as it has angles. Answer and Explanation: 1 A 10-sided 3D shape is called a pentagonal trapezohedron.

  4. Plane Shapes | Definition, Types & Examples - Lesson - Study.com

    study.com/academy/lesson/what-are-plane-shapes-definition...

    Examples of plane shapes are squares, rectangles, circles, triangles and ovals. They are also called flat shapes or plane geometric figures. Solid shapes are three-dimensional and have breadth ...

  5. What shape has 10 sides? - Homework.Study.com

    homework.study.com/explanation/what-shape-has-10-sides.html

    View this answer. A decagon is a shape that has both 10 sides and 10 angles. The prefix 'deca-' means 'ten'. For example, a 'decade' has ten years in it.

  6. 4-Sided Polygons | Overview & Shapes - Lesson - Study.com

    study.com/learn/lesson/4-sided-polygons-overview...

    A polygon is any closed shape with three or more sides. A polygon is like a drink. A quadrilateral is a 4 sided polygon with connecting sides. A quadrilateral is like milk, which is a type of ...

  7. What is a polygon with 10 sides called? | Homework.Study.com

    homework.study.com/explanation/what-is-a-polygon-with-10...

    Polygons: In geometry a polygon is an enclosed shape made up of only straight lines. A polygon is a two dimensional figure that can be represented on a plane. Triangles, squares, pentagons and hexagons are all common examples of polygons.

  8. What is a 3D pentagon shape called? | Homework.Study.com

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    What is a polygon with 10 sides called? What shape has perpendicular line segments? What is a nine sided polygon called? What are non-polygon shapes? In what shape/shapes are the diagonals always perpendicular? A. Square B. Rhombus C. Rectangle D. Parallelogram E. Trapezoid; What does a triangular pyramid look like? Troy is thinking of a shape.

  9. Nonagon | Definition, Shape & Size - Lesson - Study.com

    study.com/academy/lesson/nonagon-definition-shape.html

    A 9-sided figure is called a nonagon or an enneagon. It is called a regular nonagon if all the nine sides are equal in length and it is an irregular nonagon if the nine sides have unequal lengths ...

  10. What is a nine sided polygon called? | Homework.Study.com

    homework.study.com/explanation/what-is-a-nine-sided...

    How many sides does a polygon have with an interior angle of 157.5 degrees? How many diagonals does a 20 sided polygon have? What is a quadrilateral with four right angles called? What is a concave polygon? What is a 10-sided 3D shape called? In a regular polygon, the measure of each interior angle is 135^\circ. How many sides does the polygon ...

  11. What is the seven-sided shape called? | Homework.Study.com

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    View this answer. A seven-sided shape is called a heptagon. Hepta - is a Greek prefix meaning 'seven' and - agon comes from the Greek word for 'angle'. Since the heptagon... See full answer below.