Math Problem Statement

What is the area of this triangle

What is the area of this triangle?

Solution

To calculate the area of the triangle, we need to know the coordinates of its vertices.

From the image, the vertices of the triangle appear to be:

  • GG at (0,2)(0, 2),
  • EE at (0,0)(0, 0),
  • FF at (3,0)(3, 0).

The area AA of a triangle with vertices at (x1,y1)(x_1, y_1), (x2,y2)(x_2, y_2), and (x3,y3)(x_3, y_3) can be calculated using the formula:

A=12x1(y2y3)+x2(y3y1)+x3(y1y2)A = \frac{1}{2} \left| x_1(y_2 - y_3) + x_2(y_3 - y_1) + x_3(y_1 - y_2) \right|

Substituting the coordinates of G(0,2)G(0, 2), E(0,0)E(0, 0), and F(3,0)F(3, 0):

A=120(00)+0(02)+3(20)A = \frac{1}{2} \left| 0(0 - 0) + 0(0 - 2) + 3(2 - 0) \right| A=12×0+0+6=12×6=3A = \frac{1}{2} \times \left| 0 + 0 + 6 \right| = \frac{1}{2} \times 6 = 3

Therefore, the area of the triangle is 3 square units.

Would you like more details or have any questions?

Here are 5 related questions for further exploration:

  1. How do you find the area of a triangle using different methods, such as base and height?
  2. What is the perimeter of this triangle based on the given vertices?
  3. How can you verify if a triangle is a right triangle using its coordinates?
  4. What happens to the area if the triangle is scaled by a factor of 2?
  5. How would the area change if one vertex of the triangle moved along the x-axis?

Tip: Always double-check the coordinates on a graph to ensure precise calculations when solving geometry problems.

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Math Problem Analysis

Mathematical Concepts

Geometry
Coordinate Geometry
Triangle Area Calculation

Formulas

Area of a Triangle = 1/2 | x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2) |

Theorems

Area of Triangle Theorem (using vertices on a coordinate plane)

Suitable Grade Level

Grades 7-9