Given: Quadrilateral EFGH has vertices at E(2, 3), F(-2,5), G(-3, 3), and H(1,1). Prove Quadrilateral EFGH is a parallelogram. 8 6 -8 -6 -4 -20 2 4 6 8 -2 -4 -6 -8 © 2016 StrongMind. Created using GeoGebra. Examine the proof and answer the question. Statements Reasons 1. Quadrilateral EFGH has vertices at E(2, 3), F(-2, 5), G(-3, 3), and H(1, 1). 1. Given 2. The slope of EF 2. Slope formula %3D 1–3 The slope of GH 1-(-3) The slope of FG = = 2. 35 The slope of EH = H 2. 3. EF || GH 3. ? FG || EH 4. Quadrilateral EFGH is a parallelogram. 4. Both pairs of opposite sides of a parallelogram are parallel. Which reason justifies statement 3? O Lines with equal slopes are parallel. O Lines with opposite reciprocal slopes are parallel. O Opposite sides of quadrilaterals are parallel. O ZE, ZF, ZG, and ZH are right angles.

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter5: Similar Triangles
Section5.2: Similar Polygons
Problem 11E: a Does the similarity relationship have a reflexive property for triangles and polygons in general?...
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Question
Given:
Quadrilateral EFGH has vertices at E(2, 3), F(-2,5), G(-3,3), and H(1, 1).
Prove:
Quadrilateral EFGH is a parallelogram.
8
6
F
4
-8
9-
-4
-20
4
6
8
-2
-4
-6
-8
© 2016 StrongMind. Created using GeoGebra.
Examine the proof and answer the question.
Statements
Reasons
1. Quadrilateral EFGH has vertices at E(2, 3), F(-2, 5), G(-3,3), and H(1, 1).
1. Given
2. The slope of EF =
-2-2
5 3
2. Slope formula
The slope of GH =3)
1-3
%3D
1-(-3)
The slope of FG = ,
= 2.
3 (-2)
3-5
The slope of EH =B = 2.
1-3
%3D
1-2
3. ?
3. EF || GH
FG || EH
4. Quadrilateral EFGH is a parallelogram.
4. Both pairs of opposite sides of a parallelogram are parallel.
Which reason justifies statement 3?
O Lines with equal slopes are parallel.
O Lines with opposite reciprocal slopes are parallel.
O Opposite sides of quadrilaterals are parallel.
O ZE, ZF, ZG, and ZH are right angles.
Transcribed Image Text:Given: Quadrilateral EFGH has vertices at E(2, 3), F(-2,5), G(-3,3), and H(1, 1). Prove: Quadrilateral EFGH is a parallelogram. 8 6 F 4 -8 9- -4 -20 4 6 8 -2 -4 -6 -8 © 2016 StrongMind. Created using GeoGebra. Examine the proof and answer the question. Statements Reasons 1. Quadrilateral EFGH has vertices at E(2, 3), F(-2, 5), G(-3,3), and H(1, 1). 1. Given 2. The slope of EF = -2-2 5 3 2. Slope formula The slope of GH =3) 1-3 %3D 1-(-3) The slope of FG = , = 2. 3 (-2) 3-5 The slope of EH =B = 2. 1-3 %3D 1-2 3. ? 3. EF || GH FG || EH 4. Quadrilateral EFGH is a parallelogram. 4. Both pairs of opposite sides of a parallelogram are parallel. Which reason justifies statement 3? O Lines with equal slopes are parallel. O Lines with opposite reciprocal slopes are parallel. O Opposite sides of quadrilaterals are parallel. O ZE, ZF, ZG, and ZH are right angles.
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