Question

Can you answer (b) and (d) on number 27 please?

Answer 1

To find:

b) measure of angle 1

d) If AC = 10, then DE = ?

Solution:

b) Given that ABCD is a square. It is known that the interior angle of a square is equal to 90 degrees and the diagonal bisects the interior angles of the square. So, angle 1 is equal to 45 degrees.

Thus,

`m\angle1=45^o`

d) The diagonals of a square are equal in length. If AC = BD = 10 cm.

The diagonal of a square bisect each other. So, BE = ED = 5 cm.

Thus, DE = 5 cm.