Question

the line joining the mid point of one diagonal to one of the two other vertices in a regular quadrilateral is 70 cm.what is the length of other diagonal?

answer is 140 cm but I want explanation correctly

Answer 1

let ABCD the rectangle in which AC be its one of the diagonal

Let O be the mid point of AC

Now OD, =70cm

We know that diagonal of rectangle bisect each other.

So, diagonal BD will intersect AC at O.

Now OB = OD= 70cm

So BD = OB+OD= 140cm

We know that diagonal of rectangle are equal so,

$ac = 140cm$

Answer 2

Answer:

140

Step-by-step explanation:

AQ

x=70+70

x=140

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