taskmasters
taskmasters taskmasters
  • 11-09-2016
  • Mathematics
contestada

If m∠ABC = 72°, what is m∠DAB?

A) 72°
B) 108°
C) 144°
D) 216°

If mABC 72 what is mDAB A 72 B 108 C 144 D 216 class=

Respuesta :

Аноним Аноним
  • 11-09-2016
∠ABC=∠CDA=72º
∠DAB=∠BCD=x

∠ABC+∠CDA+∠DAB+∠BCD=360º

Therefore:
72º+72º+x+x=360º
144º+2x=360º
2x=360º-144º
2x=216º
x=216º/2
x=108º

So, ∠DAB=∠BCD=x=108º

Answer: ∠DAB=108º  (B)
Answer Link
9cakaolisa 9cakaolisa
  • 21-04-2020

B) 108°

Answer:

B) 108°

Step-by-step explanation:

Answer Link

Otras preguntas

If y^8 = 4 and y^7 = 3/x, what is the value of y in terms of x? (A) 4x/3 (B) 3x/4 (C) 4/x (D) x/4 (E) 12/x
What is Taurine? Please help :)
solve the formula for the indicated variable  c=yt+y,for t (the solution is t=___)
Aside absorbing water and nutrients, what other functions do the roots serve?
isabella has found that she stays the most fit by running variouse dinstances and terrains through out the week. On mondays she runs 2.5 miles, on tuesdays 4.6
Solve for y.8^3-3y=256^4y
In what ways did contributions from African Americans aid the struggle for abolition?
how are airplanes artificially pressurized?
Which sentence does not contain any errors? A. Fortunately, information on they're collars helped us locate the owners of the dogs.
what are the 2 types of behavioral responses??