Question

Pawan is studying in standard 9. His father purchase a square shape plot. After visiting the land few options came in his mind give the answers to these questions by looking at the figure:​

Answer 1

Answer:

i think answer is 90 degrees

Answer 2

Given,

The given plot is square in shape.

Solution,

Know that the diagonals of a square bisect the angles in equal parts.

Know that the angles of a square are all $\[90^\circ \].$  

In triangle AOB

$\[\begin{array}{l} \Rightarrow \angle OAB + \angle OBA + \angle AOB = 180^\circ \\ \Rightarrow 45^\circ + 45^\circ + \angle AOB = 180^\circ \\ \Rightarrow 90^\circ + \angle AOB = 180^\circ \\ \Rightarrow \angle AOB = 90^\circ \end{array}\]$  

Hence, the measure of angle AOB is$\[90^\circ \].$