Question

complete the proof by providing the missing reasons
given:cb bisects bd,de bisects ec, cb=de
prove dbc=ced


CB=DE,CB BISECTS BD AND DE BISECTS EC: GIVEN
CBD AND DEC ARE RIGHT ANGLES : DEFINITION OF PERPENDICULAR SEGMENTS
CBD=DEC: ?
CD=CD: ?
DBC=CED : ?

Answer 1

CBD and DEC are right angles by definition of perpendicular segments, therefore CBD=DEC because they are both right angles.

Answer 2

then thats what im going to put because im geting to the point of frustration!

Answer 3

I was hoping @FoolForMath was around, as I recall he was pretty good with geometry.

Answer 4

where is he?

Answer 5

If nothing else put a star by it and come back to it.

Answer 6

Says he's idle in the lobby.

Answer 7

???

Answer 8

Basically unavailable.

Answer 9

danget!

Answer 10

What's your next one?

Answer 11

okay im going to type it its easier i think?

Answer 12

write a paragraph proof to show that ABC=DEC given AC=DC and BC=CE?

Answer 13

You could show that they are congruent triangles using SAS. You are given two sides that are equal and using the rule of intersecting lines you can show that the angles they share are equal.

Answer 14

so is that the proof what you just wrote?? because if so that was easy.

Answer 15

I wouldn't say it was verbatim what I wrote, it has been 20 years since I did geometry so I might not have each rule correctly cited. The overall approach would be similar to what I wrote, yes.

Answer 16

im writing it cause im so frustrated with this math!

Answer 17

lol

Answer 18

Here, it looks to me like you have the last problem on this page: http://library.thinkquest.org/20991/geo/ctri.html

Answer 19

yeah it does lol

Answer 20

like this math is hard :/

Answer 21

The thing with geometry is you basically memorize a bunch of angle theorems and apply them wherever you can.

Answer 22

and i hate that because they all basically sy the same thing over and over so you really dont know which one to choose geometry sucks. and now the rest of the questions are easy. smh.

Answer 23

That's good you found some easy ones, with any luck someone will come along and point out the answer to anything we may have missed here.

Answer 24

.Given: AB is the perpendicular bisector of IK. Name two lengths that are equal.

Answer 25

yeah i hope so i have two tries to get A im using one so i hope i get it the 1st time.

Answer 26

Two lengths that are equal, I would say AK and BI

Answer 27

But how to prove it.

Answer 28

oh man oh man idk idk oh man :((

Answer 29

If it passes through the midpoint of IK, then IJ and JK are equal, which is the definition of a midpoint.

Answer 30

okay thx and umm you know how we have the chat room at the bottom of the screen why is it when i get on there and say can someone help me please some ppl are rude but they really arnt doing anything but talking about nothing i dont get it?

Answer 31

.Li went for a mountain-bike ride in a relatively flat wooded area. She rode for 6 km in one direction and then turned and pedaled 16 km in another. Finally she turned in the direction of her starting point and rode 8 km. When she stopped, was it possible that Li was back at her starting point? Explain.?

Answer 32

Most people see the chat as just that, a chat and try to use it like they would facebook or any other place they chat with friends. It is seldom that you will find help in the chat room and you will find that most people who like to help just troll the question board looking for questions they want to try.

Answer 33

Can you make a triangle with 6,8,16?

Answer 34

yes you can wait no you wait idk i thoght it would have to be odd but a triangle can have any number for sides but it would be obtuse since 16 is really big or no.

Answer 35

a+b >=c So I would need to find the rule, but as I recall your 'a' side plus your 'b' side must be greater than your 'c' side or you cannot make a triangle.

Answer 36

okaay so 6 is first thats a then 16 is b and then 8 is c? so yeah you can but idk if shes back at her starting point.

Answer 37

According to the triangle inequality theorem: http://www.mathwarehouse.com/geometry/triangles/triangle-inequality-theorem-rule-explained.php you cannot have a triangle of 6,8,16, it would look like this: