No because these are the angles of a scalene triangle
An obtuse triangle
It can. An example of an isosceles triangle without any angles greater than 90 would be an equilateral triangle, with all angles equalling 60 degrees. An example with an angle greater than 90 would be a triangle with angles of 100 degrees, 40 degrees and 40 degrees. You couldn't have an isosceles triangle with 2 angles greater than or equal to 90, as all the angles sum to 180 degrees.
No; a right triangle cannot have two angles that are measured 38 and 54 degrees. This is because a right triangle must have one angle that is equal to 90 degrees, for this is a basic property of a right triangle. The sum of the angles in the triangle must be 180 degrees. In order to prove that there indeed cannot be a triangle with angles measuring 90, 38, and 54 degrees, you add the three. If their sum is greater than 180 degrees, then it is impossible; as in this case, where the sum totals to 182 degrees.
A triangle can't measure 75 degrees. A measure in degrees applies to angles, not to polygons such as triangles. In a triangle on a flat surface, the sum of angles is 180°.
No because these are the angles of a scalene triangle
A triangle with all angles measuring less than 90 degrees?That's an 'acute' triangle.
An obtuse triangle
It can. An example of an isosceles triangle without any angles greater than 90 would be an equilateral triangle, with all angles equalling 60 degrees. An example with an angle greater than 90 would be a triangle with angles of 100 degrees, 40 degrees and 40 degrees. You couldn't have an isosceles triangle with 2 angles greater than or equal to 90, as all the angles sum to 180 degrees.
An acute triangle
An acute(-angled) triangle.
An acute triangle
Scalene
No; a right triangle cannot have two angles that are measured 38 and 54 degrees. This is because a right triangle must have one angle that is equal to 90 degrees, for this is a basic property of a right triangle. The sum of the angles in the triangle must be 180 degrees. In order to prove that there indeed cannot be a triangle with angles measuring 90, 38, and 54 degrees, you add the three. If their sum is greater than 180 degrees, then it is impossible; as in this case, where the sum totals to 182 degrees.
All the angles are smaller than 90o, so triangle is acute triangle.
A triangle can't measure 75 degrees. A measure in degrees applies to angles, not to polygons such as triangles. In a triangle on a flat surface, the sum of angles is 180°.
A triangle with all three angles measuring 60 degrees is called an equilateral triangle.