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Chapter 8 & 7 Vocabulary

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## Chapter 8 & 7 Vocabulary

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**Presentations**SAMANTHA ALDRIDGE JONATHAN CARDENAS RICHARD CHASTAIN APRIL CHRIST DAVINA COX JESSE DAY THOMAS DELACRUZ ETIENNE MACKENDJO ARIEL FUTRELL AMANDA GAMEZ BIANEY GAMEZ MELISSA LOPEZ AYRIANNA MACRELLIS-JONES JOHN PARKER JOSEPH PRESSENDO MARVIN REAVES DIANET REYES-GARCIA JESSIE SANCHEZ ZANDRA STRAPLE CAYLEN WOUTERS DANIEL ZAVALA-SARABIA TIERRA WILLIAMS**Diagonal: (Page 404)**A segment connecting any two nonconsecutive vertices. Interior angle sum theorem: (Page 404) In a convex polygon, the sum of the interior angles = 180(n – 2) For a pentagon: 180(5-2) = 180(3) = 540 degrees**Why? Because 180 + 180 +180 = 540, as shown below.**3 2 4 1 5 Exterior angle sum theorem: (Page 406) In a convex polygon, the sum of the exterior angles = 360 degrees Why? Because 180(5)(sides) = 900/ 900 – 540 = 360**Parallelogram: A four sided figure with parallel opposite**sides (Page 411) Diagonals of parallelograms: Bisect each other (Page 413) Diagonals of parallelograms: Separate it into 2 congruent D’s (Page 414)**Definition of parallelogram: (Page 418)**• Both pairs of opposite sides are congruent • Both pairs of opposite angles are congruent • Both pairs of diagonals bisect each other • At least one pair of opposite sides are both parallel and congruent.**Rectangle: (Page 424) A quadrilateral with 4 right angles**and congruent diagonals.**Rhombus: (Page 431) A Parallelogram with diagonals that are**perpendicular**Trapezoid: (Page 439) A quadrilateral having only one pair**of parallel sides called base1 and base2. Isosceles Trapezoid: (Page 439) A quadrilateral having only one pair of parallel sides called base1 and base2, with congruent base angles and congruent diagonals.**Median of a Trapezoid: (Page 440) A segment joining the**midpoints of both congruent legs which is parallel to base1 and base2 and measures one-half the sum of both bases. 10 inches 11inches 12 inches**Chapter 8 & 7 Vocabulary**Pythagorean Theorem: a2 + b2 = c2 (Page 350) Pythagorean Triple: Three numbers satisfying the equationa2 + b2 = c2 45-45-90 SRT: The hypotenuse is radical 2 times the length of the other two equal sides. 30-60-90 SRT: The hypotenuse is 2 times the length of the short leg while the long leg is radical 3 times the length of the short leg. 60 45 30 45**Chapter 8 & 7 Vocabulary**3-4-5 SRT: (Explain how this works) 5-12-13 SRT: (Explain how this works) 13 5 3 5 12 4**45-45-90 Ghost Demo:**20 feet 16 feet 45 45 18 feet**3-4-5 Ghost Demo:**20 feet 13 feet 16 feet 16 feet**5-12-13 Ghost Demo:**20 feet 11 feet 16 feet 8 feet**30-60-90 Ghost Demo:**20 feet 16 feet 60 30 15 feet**Convex Polygon: A polygon wherein no points contained in any**lines drawn from anyof it’s sides may be found in it’s interior (CONVEX) (This polygon is concave.)**Presentations**SAMANTHA ALDRIDGE JONATHAN CARDENAS RICHARD CHASTAIN APRIL CHRIST DAVINA COX JESSE DAY THOMAS DELACRUZ ETIENNE MACKENDJO ARIEL FUTRELL AMANDA GAMEZ BIANEY GAMEZ MELISSA LOPEZ AYRIANNA MACRELLIS-JONES JOHN PARKER JOSEPH PRESSENDO MARVIN REAVES DIANET REYES-GARCIA JESSIE SANCHEZ ZANDRA STRAPLE CAYLEN WOUTERS DANIEL ZAVALA-SARABIA TIERRA WILLIAMS