Answer:
See below.
Step-by-step explanation:
ABC is an isosceles triangle with BA = BC.
That makes angles A and C congruent.
ABD is an isosceles triangle with AB = AD.
That makes angles ABD and ADB congruent.
Since m<ABD = 72 deg, then m<ADB = 72 deg.
Angles ADB and CDB are a linear pair which makes them supplementary.
m<ADB + m<BDC = 180 deg
72 deg + m<BDC = 180 deg
m<CDB = 108 deg
In triangle ABD, the sum of the measures of the angles is 180 deg.
m<A + m<ADB + m<ABD = 180 deg
m<A + 72 deg + 72 deg = 180 deg
m<A = 36 deg
m<C = 36 deg
In triangle BCD, the sum of the measures of the angles is 180 deg.
m<CBD + m<C + m<BDC = 180 deg
m<CBD + 36 deg + 108 deg = 180 deg
m<CBD = 36 deg
In triangle CBD, angles C and CBD measure 36 deg making them congruent.
Opposite sides DB and DC are congruent making triangle BCD isosceles.
Answer: It's B
Step-by-step explanation:
Answer:
9
Step-by-step explanation:
3x3x3x3x3= 193u19283
3x3x3=something
=9
bingo
mathmatecian
e z pz
lemon queeze
Answer:
<em>The shortest possible length for the service road is 2.88 miles.</em>
Step-by-step explanation:
According to the below diagram, 
and 
are the positions of airport, shopping center and factory respectively.
Given that, 
and 
In right triangle 
The shortest possible length for the service road from the shopping center to the highway that connects the airport and factory is 
.
That means, 
is also a right triangle in which 
, Hypotenuse
miles and is the opposite side in respect of 
or 
.
Now in right triangle 
So, the shortest possible length for the service road is 2.88 miles.
