what tell formul traingle
Answers
Answer:
1/2×base×height
Step-by-step explanation:
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Step-by-step explanation:
Triangle Formula
What is the triangle?
As we saw that triangle is a closed polygon with minimum numbers of sides i.e. three. It is the easiest polygon which works as the base for other polygons with more number of sides. This also represents the smallest stable closed shape. Two very basic rules for a triangle are:
The sum total of all three angles will be 180∘180∘
If∠A,∠B,and∠CarethreeanglesinaΔABC,then:If∠A,∠B,and∠CarethreeanglesinaΔABC,then:
∠A+∠B+∠C=180∘∠A+∠B+∠C=180∘
The sum of any two smaller sides will be always larger than the biggest side.
If the length of two smaller sides in ΔΔ ABC are a and b and the largest side length is c, then: a+b> c
Types of Triangles
Triangles are of different types. Some of these are:
Equilateral Triangles: The Equilateral Triangles have the following properties:
Three sides with equal length
Three angles all equal to 60∘60∘
Three lines of symmetry
Isosceles Triangles: The Isosceles Triangles have the following properties:
Only two sides of equal length
Only two equal angles
One line of symmetry
Scalene Triangles: Scalene triangles have the following properties
All sides of different equal lengths
All angles are different
No lines of symmetry
Acute triangles: Acute triangles have all acute angles i.e. angles less than90∘90∘
Right Triangles: The Right Triangles is having one right angle i.e. equal to 90∘90∘
Obtuse triangles: Obtuse triangles have one obtuse angle i.e. angle which is greater than 90∘90∘
The Triangle Formula is given below as,
The perimeter of a triangle:
P = a + b + c
Where
PPerimeter of trianglea, b, cLength of three sides
Area of a triangle:
A = bXh2bXh2
Where,
AArea of trianglebLength of base of the trianglehHeight of the triangle
If only two sides and an internal angle is given then the remaining sides and angles can be easily computed by using the formula given below:
asinA=bsinB=csinCasinA=bsinB=csinC
∠A,∠B,and∠C∠A,∠B,and∠CAngle measurements of the trianglea, b, cLength of three sides