By using trigonometry or Pythagoras' theorem depending on what type of triangle it is.
That will depend on the height of the triangle which has not been given. Base = (84*2)/height
If you know the length of the sides, you can use Pythagoras' Theorem to calculate the height. Use half the base for one of the shorter sides, and either of the two identical sides of the triangle for the hypothenuse. Solve for the other one of the shorter sides (the height).
Given that,base = 10 cm and height = 12 cm.The area of a triangle = 1/2 * base * height= 1/2 * 10 * 12= 5 * 12= 60 sq.cm.
Area of any triangle is: 0.5*base*height
That the area of a triangle = 0.5*base*height
1/2 base x height
(base x height) / 2
The height and base are not sufficient to uniquely identify the sides of a triangle - there are an infinite number of possibilities.
Half The Base, Times The Height Of The Triangle.
Depends from the given information. For example, if it is given the measure of the angle base θ, and the length of the base b, the sum of the sides a of the isosceles triangle equals to 2a = b/cos θ If it is given the measure of the angle base θ, and the length of the height h, the sum of the sides a of the isosceles triangle equals to 2a = 2h/sin θ If it is given the measure of the vertex angle θ, and the length of the base b, the sum of the sides a of the isosceles triangle equals to 2a = b/sin θ/2 If it is given the measure of the vertex angle θ, and the length of the height h, the sum of the sides a of the isosceles triangle equals to 2a = 2h/cos θ/2 If it is given the length measures of the base b and the height h, the sum of the sides a of the isosceles triangle equals to 2a = √(h4 + b2) (from the Pythagorean theorem)
The relation between the height of a triangle, its base and its area is given by: Area = 0.5 * Base * Height Therefore, we have: Height = (2 * Area)/ Base.
Divide the area by height then you get the base.
That will depend on the height of the triangle which has not been given. Base = (84*2)/height
The side you use as the base does not matter. What does matter is that the height is the perpendicular distance between this side and the other vertex. If there is a right angle in the triangle, then use the two sides next to it as the base and height. Otherwise a bit of trigonometry will be required to work out the height of the triangle if it is not given.
The given dimensions would not form a right angle triangle but in general the are of a triangle is 0.5*base*perpendicular height
area of a triangle = 1/2 base x height ie times the area by two then divide by the base = height
The height has not been given but the area of the triangle is: 0.5*height*base