Question

prove that square is a rhombus by using the 2 column format

Answer 1

Please post the diagram. Thanks.

Answer 2

Our teacher didn't post a diagram. She just instructed us that prove that square is a rhombus.

Answer 3

Please help me :"((

Answer 4

There's one more thing. make a proving in theorem theorem 4-7 the diagonals of a square bisects the vertex
angle using two column format

Answer 5

@rubyjane Before I can help, I need to know these two things:

1) How is square defined in your book?
2) How is rhombus defined in your book?

Answer 6

Also, Theorem 4-7 means the 7th theorem in chapter 4 in somebody's book. So, I don't know what that theorem states.

In a new thread, post the exact wording of that theorem, okay?

Answer 7

theorem 4-7 the diagonals of a square bisects the vertex
angle

Answer 8

Theorem 4-7 in my book is this:

If a point lies on the bisector of an angle, the the point is equidistant from the sides of the angle.

Answer 9

this is the topic : properties of diagonals in special quadrilaterals

Answer 10

I need this for the first proof: @rubyjane

1) How is square defined in your book?

2) How is rhombus defined in your book?

Answer 11

The definition in my book: A square is a rhombus with a right angle :)

Answer 12

@kc_kennylau same

Answer 13

REALLY?! I CREATED THAT!!!!! YAY :DDD

Answer 14

If "A square is a rhombus" by definition, then why @rubyjane are you being asked to prove that it is true?

Answer 15

My book's definition of square:

Square: A quadrilateral with four right angles and four congruent sides.

Answer 16

I really don't know. our teacher just said that we need to prove

Answer 17

The first relationship is true by definition. There is nothing to prove.

Let's look at this:

The diagonals of a square bisects the vertex angle.
What is meant by vertex angle?

Did you mean to write "Each diagonal of a rhombus bisects two angles of the rhombus."

Unless we are clear on what it is we want to prove, we won't be able to get anywhere. So, that is why I am asking.

Answer 18

theorem 4-7 the diagonals of a square bisects the vertex
angle

Answer 19

the topic is properties of diagonals in special quadrilaterals

Answer 20

I think vertex angles must be the angles of the square or whatever.

Look at this: http://www.teachertube.com/viewVideo.php?video_id=20730

Answer 21

I already watched it

Answer 22

The diagonals of a square bisects two angles of the square.

Given: Square ABCD with diagonal AC
Prove: <1 ≅ <2; Also, <3 ≅ <4