whitethunder05
31.10.2020 •
Mathematics
Nina has prepared the following two-column proof below. She is given that LOLN - LNO and she is trying to prove
that OL - ON.
Step Statement
Reason
1
OLN - LNO
Given
2
Draw OE as a perpendicular bisector to LN by Construction
3
LEO - NEO
Transitive Property of Equality
Definition of a perpendicular Bisector
4
m_LEO = 90°
5
m NEO = 90°
Definition of a Perpendicular Bisector
6
LE - EN
Definition of a Perpendicular Bisector
7
AOLE - AONE
Side-Angle-Side (SAS) Postulate
8
OL - ON
CPCTC
Nina made two errors in the proof. Identify and correct the errors. (10 points)
Solved
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Ответ:
A=12*5=60 cm=60*3=180 ft^2
the other answer is P=102+4*4=118 ft
the lengh and the width increase with 4 feet ...the perimeter increase with 4*4 ft=16 ft