-- Measure or calculate the length of each of its 3 sides. -- Add the lengths of its 3 sides. -- The sum is the perimeter of the triangle.
Use two sides and Pythagoras's theorem to work out the third side. Then simply add the three sides.
I think you need at least one other piece of information. A length of a side? An angle? Is it a right angled triangle?
Using Pythagoras' theorem and the quadratic equation formula the sides of the triangle work out as 6.25 cm and 15 cm. Therefore the perimeter of the right angle triangle is: 6.25+15+16.25 = 37.5 cm
Use the cosine rule: a2 = b2+c2 - 2bc*cos A An isosceles triangle has two equal sides.
-- Measure or calculate the length of each of its 3 sides. -- Add the lengths of its 3 sides. -- The sum is the perimeter of the triangle.
The perimeter of a triangle is side A plus side B plus side C. Since we are talking about a right triangle, if you know two sides, then you know the third by the Pythagorean Theorem: A2 + B2 = C2
It depends on what else you know about the triangle.
Pythagoras theorem will always work with a right-angled triangle.
Use two sides and Pythagoras's theorem to work out the third side. Then simply add the three sides.
A right triangle is easy, simply multiply the two sides and divide by two
Measure it or check that it complies with Pythagoras' theorem.
I think you need at least one other piece of information. A length of a side? An angle? Is it a right angled triangle?
Using Pythagoras' theorem and the quadratic equation formula the sides of the triangle work out as 6.25 cm and 15 cm. Therefore the perimeter of the right angle triangle is: 6.25+15+16.25 = 37.5 cm
Use the cosine rule: a2 = b2+c2 - 2bc*cos A An isosceles triangle has two equal sides.
His work on right angle triangles is known as Pythagorases Theorum and it states that.. "The square of the hypotenuse is equal to the sum of the squares of the other two side."
0.5 x side a x side b where a and b are any side except the longest one (the hypotenuse)