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# 2- D Shapes PowerPoint PPT Presentation

Understanding Two - Dimensional Shapes. 2- D Shapes. Angles. Right Angle. Parallel Lines. Plane Figures. Circle. Polygon. X. X. Triangle. Equilateral Triangle. Isosceles Triangle. Right Triangle. Quadrilateral. A quadrilateral is a shape that has 4 sides and 4 angles. . Kite.

2- D Shapes

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#### Presentation Transcript

Understanding

Two - Dimensional Shapes

2- D Shapes

Angles

Right Angle

Parallel Lines

Plane Figures

Circle

Polygon

X

X

Triangle

Equilateral Triangle

Isosceles Triangle

Right Triangle

A quadrilateral is a shape that has 4 sides and 4 angles.

Kite

A kite is a quadrilateral that looks like a kite -- with no parallel sides, but with two pairs of equal sides that are adjacent to each other.

Parallelogram

A parallelogram is a figure that has four sides and each pair of opposite sides is equal and parallel.

Rhombus

Square

A square is a quadrilateral that has four equal sides and four right angles.

Rectangle

A rectangle is a quadrilateral that has four right angles and each pair of opposite sides is parallel and the same length.

Trapezoid

5

Pentagon

Regular

Irregular

A pentagon is a figure with five sides. If all angles and sides are equal, then it is regular, otherwise it is irregular.

6

Hexagon

Irregular

Regular

A hexagon is a figure with six sides. If all angles and sides are equal, then it is regular, otherwise it is irregular.

Octagon

8

Regular

Irregular

An octagon is a figure with eight sides. If all angles and sides are equal, then it is regular, otherwise it is irregular.

Label each shape.

Which of these shapes are plane figures? polygons? triangles? quadrilaterals?

How many pairs of parallel lines can you find?

How many right angles can you find?

hexagon

parallelogram

circle

trapezoid

rhombus

isosceles triangle

pentagon

octagon

equilateral triangle