Classifying triangles is a great skill to know.
Acute Triangles: These are triangles with measures lessthan 90 degrees.
Obtuse Triangles: Any triangle with measures greater than 90 Degrees.
Right Triangle: Any triangle with a Right Angle (exactly 90 degrees)
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If the triangle is less than 90 degrees, it is an acute triangle
there is many ways to write when classifying a triangle, you can classify it by its sides or angles. When you classify it by angles you can classify it by acute, obtuse, and right triangle. when classyfing it by sides its isosceles, equilateral, and scalene!
One rectangle and two triangle
It is an obtuse triangle
If you only know one angle, that angle is greater than 90 degrees, then the triangle is obtuse If that angles is equal to 90 degrees, then the triangle is a right triangle. If it is less than 90 degrees, you don't know enough information to classify the triangle.