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Geometry Basics for Shapes and Triangles

Learn about triangle classification, similar pairs ratio, equations for side length, and naming different polygons and shapes. Understand concepts like perimeter, circumference, area, and shape attributes.

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Geometry Basics for Shapes and Triangles

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  1. OBTUSE SCALENE ISOSCELES EQUILATERAL March 9, 2009DRAW IT!!! 147˚ 114˚ Classify the given triangle according to its side: Which similar pairs would have a ratio of 3:8 ? A. B. 4.5 m 2 m 12 m 3 m x x 24 m 8 m

  2. 3. Which equation could be used to determine the side length “s” of an isosceles triangle with a perimeter of 50 feet? 17 ft A. B. C. Name the given shape: Isosceles trapezoids have : One pair parallel bases One pair congruent acute angles One pair congruent obtuse angles base base

  3. 5. Name the shape: base Right Trapezoids have: One pair parallel bases Two right angles base

  4. Where is the base and the height of the figure?

  5. NOTES: • PERIMETER OF ANY SHAPE: THE DISTANCE AROUND. ADD ALL SIDES. • CIRCUMFERENCE, REVOLUTION ,ROTATION (FOR CIRCLES USE FORMULA πxd) • RIM • BORDER • EDGE • FRINGE • OUTLINE • FENCE • CAULK • TRIM • TRACE • FRAME • AROUND

  6. NOTES: • AREA OF ANY SHAPE: • THE TOTAL INSIDE FLAT SQUARES. • USES base, height,multiplication and sometimes division. • Different formulas for different shapes. • THE HEIGHT MUST FORM A 90° ANGLE! • Mow • Paint • Cover • Carpet • Vacuum • Clean a window • Color • Shade • Floor • Spread • Tile • Squared • Overlay

  7. Area = 13² perimeter=13(4) or 52 s = 13 Or 169

  8. base = _______ height = ________ Length = ________ Width = _________ Area = __________ perimeter = __________

  9. POLYGON QUADRILATERAL PARALLELOGRAMS SQUARES RHOMBUS LEANING SQUARE RECTANGLES PARALLELOGRAMS LEANING RECTANGLE

  10. AREA IS THE BASE MULTIPLIED BY THE HEIGHT A = bh

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