What is the format of this proof?
Given: ZABC is a right angle, ZDBC is a straight angle
Prov...
Mathematics, 18.03.2021 03:20 krojas015
What is the format of this proof?
Given: ZABC is a right angle, ZDBC is a straight angle
Prove: ZABD is a right angle
VX
A
D
B
1
2
3
4
5
6
7
Statements
LABC is a right angle
_DBC is a straight angle
m_ABC = 90°
m_DBC = 180°
m_ABD + m_ABC = m_DBC
m_ABD + 90° = 180°
m_ABD=90
ON-
Reasons
given
given
definition of right angle
definition of straight angle
angle addition property
substitution property
subtraction property
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