Mymensingh higher secondary 2013#3

Forum rules
Please don't post problems (by starting a topic) in the "X: Solved" forums. Those forums are only for showcasing the problems for the convenience of the users. You can always post the problems in the main Divisional Math Olympiad forum. Later we shall move that topic with proper formatting, and post in the resource section.
User avatar
samiul_samin
Posts: 1004
Joined: Sat Dec 09, 2017 1:32 pm

Mymensingh higher secondary 2013#3

Unread post by samiul_samin » Mon Feb 18, 2019 12:33 am

In triangle $ABC$ , $H$ is orthocenter . $CD$ is perpendicular to $AB$ . The midpoint of $AH$ is $M$ and the midpoint of $BC$ is $N$ . Find the value of $\angle {MND}$.

User avatar
samiul_samin
Posts: 1004
Joined: Sat Dec 09, 2017 1:32 pm

Re: Mymensingh higher secondary 2013#3

Unread post by samiul_samin » Mon Feb 18, 2019 8:58 am

Hint
Draw a perfect picture
Answer
$90^{\circ}$

Post Reply