anonymous
  • anonymous
For the quadrilateral ABCD, the diagonals bisect each other. The flowchart shown below is used to prove that quadrilateral ABCD is a parallelogram. In the flowchart, what is justification B? Corresponding angles are congruent Corresponding parts of congruent triangles are congruent Alternate interior angles are congruent Reflexive property
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
anonymous
  • anonymous
@ganeshie8
anonymous
  • anonymous
I think it's choice 2

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More answers

ganeshie8
  • ganeshie8
hint : ABO and CDO are alternate interior angles.
anonymous
  • anonymous
So the 3rd choice?
ganeshie8
  • ganeshie8
if alternate interior angles are congruent, then lines are parallel. So the 3rd choice.
anonymous
  • anonymous
Thank you! Okay, I have this one too: What is the measure of Angle F?
ganeshie8
  • ganeshie8
count how many sides it has
anonymous
  • anonymous
6
anonymous
  • anonymous
so, 10(6) - 4 = 60 - 4 = 56
anonymous
  • anonymous
Or is that completely wrong?
ganeshie8
  • ganeshie8
use sum of interior angles in a polygon formula :- (n-2)*180
ganeshie8
  • ganeshie8
add all the angles
anonymous
  • anonymous
(6-2)*180 = (4)*180 = 720 ??
ganeshie8
  • ganeshie8
sum of all the angles equals that
ganeshie8
  • ganeshie8
use that to find x first
anonymous
  • anonymous
How do I do that?
ganeshie8
  • ganeshie8
add all the angles, write down.
ganeshie8
  • ganeshie8
134 + 128 + 10x-4 + ...... = 720 solve x
ganeshie8
  • ganeshie8
getting ?
anonymous
  • anonymous
262 + 10x - 4 = 720 ?
anonymous
  • anonymous
is it 146?
anonymous
  • anonymous
x = 15?
ganeshie8
  • ganeshie8
forget it
ganeshie8
  • ganeshie8
il show u the complete solution
ganeshie8
  • ganeshie8
Sum of angles in a n-sided polygon addup to (n-2)*180 : 134 + 128 + 10x-4 + 5x+8 + 5x+8 + 10x-4 = (6-2)*180 270 + 30x = 720 30x = 450 x = 15
ganeshie8
  • ganeshie8
F = 10x-4 = 10*15-4 = 146
ganeshie8
  • ganeshie8
oh ! you got the same thing !!!
anonymous
  • anonymous
Thats what I did on a piee of paper
ganeshie8
  • ganeshie8
i overlooked your computations sorry friend :)
anonymous
  • anonymous
That's okay! Thanks for the help! (:
ganeshie8
  • ganeshie8
you welcome :)

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