(i)Explain Orthocenter with diagram and position of orthocenter in acute triangle; right triangle and obtuse triangle .

Orthocenter of a Triangle

The orthocenter of the triangle PAB is

A right triangle cannot have an obtuse angle.

One of the acute angles of a right triangle is 50^(@) . Find the other acute angle.

Classify these triangles as right, acute or obtuse angled triangle.

H is orthocenter of the triangle ABC, then AH is equal to :

Explain the following terms: Triangle (ii) parts or elements of a triangle Scalene triangle (iv) isosceles triangle Equilateral triangle (vi) acute triangle Right triangle (viii) obtuse triangle Interior of a triangle (x) exterior of a triangle.

If hypotenuse and an acute angle of one right triangle are equal to the hypotenuse and an acute angle of another right triangle, then the triangles are congruent

A triangle whose all sides are equal is called an equilateral triangle (b) an acute triangle a right triangle (d) an isosceles triangle

The orthocenter of the triangle formed by the lines xy=0 and x+y=1 is