1 / 23

G e o m e t r i c a l F i g u r e s

G e o m e t r i c a l F i g u r e s. Present to M. Veerasakdi. By Tammawut Ittitammachai. P. 4/8 No. 15. Geometric Shapes. Quadrilaterals. A quadrilateral is a polygon with 4 sides. Quadrilaterals. Square. Rectangle. Rhombus. Kite, Dart. Trapezoid. Parallelogram. Trapezium. Square.

kiri
Download Presentation

G e o m e t r i c a l F i g u r e s

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. GeometricalFigures Present to M. Veerasakdi By TammawutIttitammachai P. 4/8 No. 15

  2. Geometric Shapes

  3. Quadrilaterals A quadrilateral is a polygon with 4 sides.

  4. Quadrilaterals Square Rectangle Rhombus Kite, Dart Trapezoid Parallelogram Trapezium

  5. Square • A square is a regular quadrilateral. • All angles are equal (90°). • All sides are of equal length. • Opposite sides are parallel. • The diagonals bisect each other at 90°. • The diagonals are equal in length.

  6. Rectangles • All angles are equal (90°). • Opposite sides are of equal length. • The diagonals are equal in length.

  7. Paralleogram • Diagonally opposite angles are equal. • sides are of equal length. • Opposite sides are parallel. • The diagonals bisect each other.

  8. Rhombus • Diagonally opposite angles are equal. • All sides are of equal lengths. • Opposite sides are parallel. • The diagonals bisect each other at 90°.

  9. Kite • Two pairs of sides are of equal length. • One pair of diagonally opposite angles is equal. • Only one diagonal is bisected by the other. • The diagonals cross at 90°.

  10. Trapezium (US) Trapezium (US) is a quadrilateral with NO parallel sides. Trapezoid (US) has a pair of opposite sides parallel.

  11. T R I A N G L E S

  12. Scalene triangle • 3 different length sides • 3 different sized angles • typically used in setting triangles • easier to paper piece • no lines of symmetry – cannot accidentally flip the block over to fix a mistake • can be a right triangle (one angle = 90 degrees) • typical triangle found in math class 30, 60, 90 • can be called half rectangle triangles in quilting

  13. Scalene triangle • Found in: • tilted blocks (as setting triangles) • wonky blocks • mariner’s compass blocks • palm blocks • birds of paradise blocks

  14. Equilateral Triangles • 3 sides equal length • 3 equally sized angles • least commonly found in quilting • 6 triangles can make a hexagon block • all angles are 60 degrees - no exceptions • 3 angles of symmetry, flip around any angle • guaranteed to have 2 sides of bias edges

  15. Equilateral Triangles • Found in: • thousand pyramid blocks • chevron designs • strip pieced hexagons • tumbling blocks • bordered thousand pyramid blocks

  16. Isosceles Triangles • 2 equal length sides • 2 equally sized angles • most commonly found in quilting • Half Square Triangle – HST • Quarter Square Triangle – QST • one line of symmetry, flip around the ‘odd’ angle • can be a right triangle (HST, QST, flying geese) • triangle with an acute ‘odd angle’ – kaleidoscope block

  17. Isosceles Triangles • Found in: • pinwheel • broken dishes • flying geese • hourglass • spool • maple leaf • kalidescope

  18. Obtuse Triangles • Obtuse triangles have one obtuse angle • (an angle greater than 90). • The other 2 angles are acute (less that 90). Acute Triangles • Acute triangles have all angles acute.

  19. Geometric Architecture

  20. Geometric Shapes

  21. Varieties of GEOMETRYS

  22. Geometric Figure GAME http://www.kidsmathgamesonline.com/geometry/angles.html http://www.kidsmathgamesonline.com/geometry.html

  23. Thank You Prepared by: Tammawut Class: 4/8 No.: 15

More Related