Geometric Analysis: Identifying Acute Triangles from Visual Representation

Question

Is the triangle in the drawing an acute-angled triangle?

Video Solution

Solution Steps

00:00 Determine whether the triangle is an acute triangle
00:04 Proceed to mark the remaining angles with letters A,B
00:10 The sum of the angles in a triangle equals 180
00:22 Isolate the sum of the angles A and B

Step-by-Step Solution

To solve this problem, we need to determine whether the triangle is an acute-angled triangle.

  • Step 1: Recognize that a triangle is acute if all its angles are less than 9090^\circ.
  • Step 2: Consider the properties of the triangle in the diagram. From the drawing, the triangle is formed by vertices that have axes overlapping in a grid-like manner, suggesting it is a right triangle by observation.
  • Step 3: Validate the triangle’s nature through geometric calculation. The provided path structure resembles a right-angle configuration where two lines meet at a right angle, forming one angle of exactly 9090^\circ. The third line likely forms a hypotenuse, characteristic of right triangles.

Given the diagram’s setup and line relationships, the triangle’s apparent right angle indicates it is not an acute-angled triangle since one angle equals 9090^\circ, rather than being less than 9090^\circ.

Therefore, the solution to the problem is No, the triangle is not an acute-angled triangle.

Answer

No