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If a three-sided figure (triangle) has one angle that is zero, then all angles will be zero and the three sides will be coincident, that is, they will occupy the same space and will, therefore form a single line. Such a figure would not be referred to as a triangle, and would have little practical value in trigonometry (the study of triangles).
Therefore, every triangle has three angles greater than zero degrees, whether it be isoceles, right-angled, equilateral, or any other.
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Can a acute triangle be an obtuse triangle?
No, all three angles must be less than 90 degrees each in an acute triangle. In an obtuse triangle one of the angles is greater than 90 degrees. A triangle with a 90 degree angle is called a right triangle.
What are the angles of an isosceles triangle called?
...angles
Triangles with all angles less than 90 degrees?
this is known as an acute triangle acute triangles-no angles congruent or greater than 90 degrees right-one angle equal to 90 degrees obtuse-triangle with one angle greater than 90 degrees
What is a triangle called in which all 3 angles measure 60degrees?
A triangle with all three angles measuring 60 degrees is called an equilateral triangle.
If the angles in a triangle are 30 degrees 60 degrees and 90 degrees is called what type of triangle is it?
A right angles triangle, as one of the angles in the triangle is 90 degrees.
