Answer: .
Step-by-step explanation:
Given: d denotes Diego's age while s denotes his sister's age.
The situation is represented by the equation d=2s+5.
To find his sister's age we can write the above equation as [we first subtract 5 from both sides and then divide both sides by 2]
Hence, the required equation: .
Given:
AC bisects <BAD and <BCD
Prove:
<D=<B
Statement Reason
------------------------------------------------------------------------
AC bisects <BAD and <BCD | Given
m<DAC=m<BAC | Definition of an angle bisector
m<CAD=m<CAB | Definition of an angle bisector
AC=CA | Reflexive Property of Congruence
△ACD=△ACB | ASA
m<D=m<B | CPCTC
Answer:
True
Step-by-step explanation:
Because angles on a straight line are supplementary and these anglea <1 and <2 are supplementary angles