Triangle Online

A triangle is one of the basic shapes of geometry: a polygon with three corners or vertices and three sides or edges which are line segments. A triangle with vertices A, B, and C is denoted $\triangle$ ABC. In Euclidean geometry any three non-collinear points determine a unique triangle and a unique plane. (Source: Wikipedia)

Once you've gone through these, take a look at our Equilateral Triangle Area for more refernce.

Example problems for triangle solver online

Triangle solver online example 1:
                  A triangle has the base length of 20 cm and height is 23 cm. Find the area of the triangle in cm².
Solution:
   Given, base length (b) = 20 cm and height (h) = 23 cm.
Formula:
         Area of the triangle = `(1 / 2)` * (b * h)
Substitute the given base length and height values in the above formula, we get
                                            = `(1 / 2)` * (20 cm * 23 cm)
                                            = 230 cm²
Answer:
Area of the triangle is 230 cm²
Triangle solver online example 2:
Find the area of the given triangle.

Solution:
   From the given triangle ABC,
             Base length (b) = 20 cm and height (h) = 23 cm.

Formula:
         Area of the triangle = `(1 / 2)` * (b * h)
Substitute the given base length and height values in the above formula, we get
                                            = `(1 / 2)` * (20 cm * 23 cm)
                                            = 230 cm²
Answer:
Area of the triangle is 230 cm²
Triangle solver online example 3:
Find the x value of the given triangle.

Solution:
   From the given triangle ABC,
            Angle (B) = 60° and Angle (C) = 55° and Angle (A) = x
We know,
    Sum of the angle in triangle is 180°
Therefore,
   Angle (A) + Angle (B) + Angle (C) = 180°
Substitute the given values in the above formula, we get
              x + 60° + 55° = 180°
                      x + 115 = 180°
Subtract 115 on both the sides, we get
                                  x = 65°
Answer:
The final answer is Angle (A) = 65°

Triangle solver online example 4:
Find the x value of the given triangle.

Solution:
       Given triangle is right triangle ABC.
From the triangle ABC,
AC = x, AB = 48, BC = 36
Using Pythagoras theorem,
           AC² = AB² + BC²
Substitute the given values in the above formula, we get
              x² = 48² + 36²
               x²= 3600
Take square root on both the sides, we get
                 x = 60
Answer:
The final answer is 60

Practice problem for triangle solver online

Triangle solver online practice problem 1:
A triangle has the base length of 32 cm and height is 53 cm. Find the area of the triangle.
Answer:
The area of the triangle is 848 cm²
Triangle solver online practice problem 2:
Find the area of the given triangle.