Question

Three copies of a triangle were rotated and positioned as shown.

Which statement about the figure is always true?



A.
The sum of m∠1, m∠2, and m∠3 is 90°.

B.
m∠1 + m∠2 + m∠3 = 180°

C.
Angle 1 and angle 3 form a straight angle

D.
Angle 1, angle 2, and angle 3 all have the same measure.

http://static.k12.com/calms_media/media/1560500_1561000/1560892/1/97202a8cba8d842585e08726b9a1a32626d3df4a/MS_IMC-1401112-109064.jpg

Answer 1

c

Answer 2

ur welcomr

Answer 3

@iGreen

Answer 4

its c

Answer 5

how do you know its c

Answer 6

trust me, abc =180

Answer 7

angle a+b+c=180

Answer 8

each angle is 60 degree

Answer 9

u get it? right? @bcimkenz

Answer 10

@iGreen

Answer 11

was it right