Question

Give some tips for triangle​

Answer 1

Answer:

A triangle has three sides, three vertices, and three angles. The sum of the three interior angles of a triangle is always 180°. The sum of the length of two sides of a triangle is always greater than the length of the third side. A triangle with vertices P, Q, and R is denoted as △PQR.

Answer 2

• Angle Sum Property of ∆ : This states that the sum of all the angles of triangle equal to 180° .

• Exterior Angle Property of ∆ : This states that the exterior angle of a triangle is equal to the sum of opposite two interior angles of the triangle.

• Acute Triangle : Triangle whose all the angles are less than 90° is called as acute triangle.

• Obtuse Triangle : Triangle whose any one angle exceeds 90° is called as obtuse triangle.

• Right Triangle : Triangle whose any one angle equals to 90° is called right triangle.

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★ More to know :-

$\\\;\sf{\leadsto\;\;Perimeter\;of\;\Delta\;=\;Sum\;of\;all\;Sides}$

$\\\;\sf{\leadsto\;\;Area\;of\;\Delta\;=\;\dfrac{1}{2}\;\times\;Base\:\times\:Height}$

$\\\;\sf{\leadsto\;\;Area\;of\;\Delta\;=\;\sqrt{s(s\:-\:a)(s\:-\:b)(s\:-\:c)}}$

$\\\;\sf{\leadsto\;\;Semi\:-\:Perimeter\;of\;\Delta,\;s\;=\;\dfrac{Sum\;of\;all\;Sides}{2}}$

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