Quiz
Special Quadrilaterals Properties of a trapezoid Properties of an isosceles trapezoid
Definitions <ul><li>Trapezoid:   Quadrilateral with one set of parallel sides. </li></ul><ul><li>Isosceles Trapezoid:   Tr...
Patty Paper Construction: Trapezoid <ul><li>Use a double-edged straightedge to make a set of parallel segments of unequal ...
Patty Paper Construction: Isosceles Trapezoid <ul><li>Step 1: Use a straightedge to make one segment. </li></ul><ul><li>St...
Trapezoid Conjecture <ul><li>Consecutive angles between bases are supplementary. </li></ul>
Properties of an Isosceles Trapezoid <ul><li>The base angles of an isosceles trapezoid are congruent. </li></ul><ul><li>Th...
Classwork: 271-272: 3, 4, 6
Homework: Lesson worksheet 5.3: 2, 3, 5, & 7
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Special quadrilaterals trapezoids

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Special quadrilaterals trapezoids

  1. 1. Quiz
  2. 2. Special Quadrilaterals Properties of a trapezoid Properties of an isosceles trapezoid
  3. 3. Definitions <ul><li>Trapezoid: Quadrilateral with one set of parallel sides. </li></ul><ul><li>Isosceles Trapezoid: Trapezoid whose non-parallel sides are congruent. </li></ul>
  4. 4. Patty Paper Construction: Trapezoid <ul><li>Use a double-edged straightedge to make a set of parallel segments of unequal lengths. </li></ul><ul><li>Connect the endpoints of the segments. </li></ul>
  5. 5. Patty Paper Construction: Isosceles Trapezoid <ul><li>Step 1: Use a straightedge to make one segment. </li></ul><ul><li>Step 2: Use one endpoint and draw a segment. </li></ul><ul><li>Step 3: Construct the perpendicular bisector of the first segment. Leave the paper folded. </li></ul><ul><li>Step 4: Duplicate the segment made in step two and connect the endpoints of the last segment. </li></ul>
  6. 6. Trapezoid Conjecture <ul><li>Consecutive angles between bases are supplementary. </li></ul>
  7. 7. Properties of an Isosceles Trapezoid <ul><li>The base angles of an isosceles trapezoid are congruent. </li></ul><ul><li>The diagonals of an isosceles trapezoid are congruent </li></ul>
  8. 8. Classwork: 271-272: 3, 4, 6
  9. 9. Homework: Lesson worksheet 5.3: 2, 3, 5, & 7
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