Question

Is this correct?
http://prntscr.com/970xlk

Answer 1

#4 is not correct


#5, make sure to say \[\Large \angle A \cong \angle D\] notice how I'm using the congruence symbol


for #1 and #7 use the congruence symbol \(\Large \cong\) instead of the equal sign

Answer 2

Got it
#4 i knew wasn't correct....im not sure about that one :/

Answer 3

`angle A and angle D are right angles` is the statement
the reason why this statement is true is because of statement 2 and statement 3


When it says \(\Large AB \perp AD\)

That upside down T symbol means "perpendicular"

AB is perpendicular to AD, so a right angle forms at angle DAB or just angle A for short


similarly, \(\Large DE \perp AD\) so a right angle forms at angle CDE or just angle D for short


that's why `angle A and angle D are right angles`

Answer 4

Oh wow I feel dumb for not knowing that perpendicular lines form 4 right angles ;p thank you soo much :)

Answer 5

you're welcome

Answer 6

Wait so the reason would be perp. lines form 4 right angles? :/

Answer 7

if two lines are perpendicular, then they form a right angle

saying `definition of perpendicular lines` is a shorthand way of saying the above

this is one proof that does the same

http://hotmath.com/hotmath_help/topics/perpendicular-transversal-theorem.html

Answer 8

Got it thanks! :)

Answer 9

np