Question

The diagonal AC is drawn in parrollelogram ABCD. Which Method can not be used to prove that abc~cda?
a. SAS
b.SSS
c. ASA
d.SSA

PLEASE SOMEONE HELP!

Answer 1

SAS

Answer 2

@Noemi95 thank you so much. would you mind helping me sommore?

Answer 3

No problem dime, and sure. I don't ensure knowing everything, but I can try!(:

Answer 4

@Noemi95 you know what they say the more the merrier. :) lol

In circle O, a diameteer has endpoints (-5,4) AND (3,-6). What is the length of the diameter?

Answer 5

2* sqrt 41

Answer 6

Draw a right angle triangle ABC where A is point (-5,4) , C is point (3-6) and B is the point that makes a right angle with the other two points (3,4)

The diameter of the circle is AC and is the hypotenuse of triangle ABC
AB = distance along the x axis ie -5 to + 3, ie distance AB = 8
BC = distance along the y axis ie 4 to -6 ie distance = 10

Therefore using Pythagoras's theorem AC^2 = AB^2 + BC^2
AC^2 = 64 + 100
AC^2 = 164
AC = square root 164
AC = square root (4*41)
as square root 4 = 2
AC = 2 square root 41

Answer 7

@Noemi95 If AB=5x-9, DC=x+3 and EF = 2x+2 what is the length of EF??

Answer 8

Well, let's see. To figure out the value of x, we need to add of the sides then solve for x.
So, 5x-9+x+3+2x+2= 8x-4 (now solve for x)
P=8x-4
+4 +4
4/8=8x/8
x=0.5
Now plug in this value for EF.
2(0.5)+2=3
"EF=3"