the question is
which triangle is one that has no right angles?
a) scalene
b) isosceles
c) oblique
d) right
I put scalene as my answer but my online assignment says it is wrong. please help me
It is oblique. The definition of oblique is one obtuse angle and two acute angles, or three acute angles : Thus no place for a 90 degree right angle.
To determine the correct answer, let's first understand the different types of triangles:
1) Scalene Triangle: A scalene triangle has no equal sides or equal angles.
2) Isosceles Triangle: An isosceles triangle has at least two sides that are of equal length. The angles opposite to the equal sides are also of equal measure.
3) Oblique Triangle: An oblique triangle is a triangle that has no right angle. It can be either scalene or isosceles.
4) Right Triangle: A right triangle is a triangle that has one angle measuring 90 degrees. The side opposite to the right angle is called the hypotenuse.
Now, coming back to the question at hand, we are looking for a triangle that has no right angles.
a) Scalene: As mentioned earlier, a scalene triangle has no equal sides or equal angles.
b) Isosceles: An isosceles triangle can have a right angle, but it is not always the case. So, it is not necessarily the correct answer.
c) Oblique: An oblique triangle is defined as a triangle that has no right angle. This seems to align with the given condition.
d) Right: A right triangle is the exact opposite of what we are looking for. It has one angle measuring 90 degrees.
Based on the explanations above, the correct answer is C) Oblique since it is the only option that describes a triangle with no right angles.