Question

If I have a parallelogram is split into two diagonals, how can I find missing angles in it? I ask this because I recall they are rules that don't allow me to just simply go over the diagonal line nad say "this is congrient because opposite sides are congruent . .. "

Answer 1

screenshot it and post it

Answer 2

best way for us to get a look at what you are trying to express

Answer 3

i gtg

Answer 4

good luck

Answer 5

Hmm, okay,well, here is my question:

Answer 6

And it is actually, I have an idea on how to solve it, but I just know there are some theorems I can't use.

Answer 7

angle 1 = 38 degree too so than you know that the sum of angles of a triangle is 180 degree so than you can calcule easy the measure of angle 2
so than you know this measure of angle 2 - but before all you know that the opposite angles inside a parallelogramm are congruent so this mean that the measure of angle 3 is 99 degree

hope this will help you sure easy understanding all right

Answer 8

1=38 add 99 then subtract it from 180 and u will get 2nd angle

Answer 9

yse ibra very nice

Answer 10

Alright I understand that, but my question is what justifies that? See, I can do that and simply put that, because I understand it, to me is very logical but my teacher usually askes me to explain myself with a tehorem but I can't recall which theorem it would be. Also here are the answers I got, angle 1 = 38, angle 2=52 and angle 3= 90

Answer 11

sorry attention bc. angle 3 has 99 degree not 90 !!!

Answer 12

true! that's a misspelling, I have it on my paper as 90 when I actually drew it on my paper. Thanks for telling me

Answer 13

np

was my pleasure ATTENTION !!!

Answer 14

Aha, okay, well, new answers are angle 1 = 38, angle 2 = 43 and angle 3 equals 99.

Answer 15

@moonrose
Have you studied any plane geometry yet?

Answer 16

Some of it, but this was probably about 2 months ago and I'm just going back and reviewing it for my finals. I actually think this is first semester material