Do Now
Unit6.notebook
December 09, 2015
Objective:
SWBAT use properties of
trapezoids.
Do Now:
The diagonals of a rhombus are 10 and 24. Find the perimeter of the rhombus.
Hw #17: p.338-339 #1-4, 20-24, 39 (draw in diagonals)
Aug 1111:07 AM
HW Answers
2) C 4) B 6) True 8) True 10) False 12) True
14) 1) ABCD is a parallelogram 1) given 2) CE | EA, BF | EA 2) given 3) CE || BF 3) If 2 lines are perp. to same line, then they are || to each other 4) CB || EF 4) In a parallelogram, opp sides are || 5) ECBF is a parallelogram 5) If both pairs of opp sides are ||, then the quad is a parallelogram 6) <E is right 6) def of perp lines 7) ECBF is a rectangle 7) A parallelogram with one right < is a rectangle
Nov 2412:59 PM
1
Unit6.notebook
December 09, 2015
Dec 97:47 AM
Dec 97:52 AM
2
Unit6.notebook
December 09, 2015
A trapezoid is a quadrilateral with at least one pair of opposite parallel sides
An isosceles trapezoid is a trapezoid with congruent non-parallel sides.
* The base angles are ________ * The angles on different bases are ________
* The diagonals are ________ Dec 128:33 AM
Examples: Find the measures of the numbered angles in each isosceles trapezoid:
In isosceles trapezoid RSTU shown below, If RT = 3x 16 and SU = 10x 86, find x.
Aug 24:42 PM
3
Unit6.notebook
December 09, 2015
Properties are also used in proofs: Given: Isosceles trapezoid RSTU with RU≅ST
Prove: ΔRUT≅ΔSTU Statements
Reasons
Aug 24:55 PM
4
December 09, 2015
Objective:
SWBAT use properties of
trapezoids.
Do Now:
The diagonals of a rhombus are 10 and 24. Find the perimeter of the rhombus.
Hw #17: p.338-339 #1-4, 20-24, 39 (draw in diagonals)
Aug 1111:07 AM
HW Answers
2) C 4) B 6) True 8) True 10) False 12) True
14) 1) ABCD is a parallelogram 1) given 2) CE | EA, BF | EA 2) given 3) CE || BF 3) If 2 lines are perp. to same line, then they are || to each other 4) CB || EF 4) In a parallelogram, opp sides are || 5) ECBF is a parallelogram 5) If both pairs of opp sides are ||, then the quad is a parallelogram 6) <E is right 6) def of perp lines 7) ECBF is a rectangle 7) A parallelogram with one right < is a rectangle
Nov 2412:59 PM
1
Unit6.notebook
December 09, 2015
Dec 97:47 AM
Dec 97:52 AM
2
Unit6.notebook
December 09, 2015
A trapezoid is a quadrilateral with at least one pair of opposite parallel sides
An isosceles trapezoid is a trapezoid with congruent non-parallel sides.
* The base angles are ________ * The angles on different bases are ________
* The diagonals are ________ Dec 128:33 AM
Examples: Find the measures of the numbered angles in each isosceles trapezoid:
In isosceles trapezoid RSTU shown below, If RT = 3x 16 and SU = 10x 86, find x.
Aug 24:42 PM
3
Unit6.notebook
December 09, 2015
Properties are also used in proofs: Given: Isosceles trapezoid RSTU with RU≅ST
Prove: ΔRUT≅ΔSTU Statements
Reasons
Aug 24:55 PM
4
