Question

Write the properties of a ∆

Answer 1

A triangle has three sides . A sise of a triangle is connected with two vertices

A triangle has three vertices.

Included angle is the angle subtended by two sides at the vertex of the triangle.The sum of the included angles of the triangle is always equal to 180°.

The altitudes of the triangle intersects at a common point called orthocenter

Median of the triangle is a line from vertex to the midpoint of the opposite side

Answer 2

1.Angle Sum property of a triangle states that sum of all interior angles of a triangle is equal to 180°.
2.An exterior angle of a triangle is equal to the sum of its two interior opposite angles.
3.If two sides of a triangl le are unequal, the greater side has greater angle opposite to it.
4.If two angles of a triangle are unequal, the greater angle has greater side opposite to it.
5.The sum of the lengths of any two sides of a triangle is greater than the third side.
6.The difference between the lengths of any two sides of a triangle is smaller than the length of the third side.
7.The hypotenuse is the greatest side in a right-angled triangle.