Answer:
m<ADB=70°
m<ADC=110°
m<DAC=45°
Step-by-step explanation:
<ADB=<ABD(being isosceles triangle: AD=AB)
<ABD+<ADB+<DAB=180°(sum of the angle of triangle is 180°)
2<ADB+40°=180°(<ADB=<ABD and <DAB=40°)
2<ADB=140°
<ADB=70°
<ADB+<ADC=180°(being straight angle)
70°+<ADC=180°
<ADC=110°
<ADC+<ACD+<DAC=180°( sum of the angle of triangle is 180°)
110°+25°+<DAC=180°
<DAC=45°
For this case we have the following expression:

Multiplying we have:

We round the expression and we have that it is equivalent to: 20.
Thus,
is approximately equal to 20.
Answer:
The expression given is approximately equal to 20.
Option C
Answer is C.) triangle 1 and triangle 3
triangle 1 and triangle 3 are congruent by SAS
Answer:
0.135 images
Step-by-step explanation:
all you have to do is multiply 0.045× 3.
The answer is 0.135.
you have go move the decimals 3 times to the left