The classifications of a triangle are:
The question "What are the classifications of a triangle" is answered elsewhere. The angles in a triangle can be either an obtuse >90 degrees, an acute <90 degrees, or a rectal = 90 degrees
trianglessj
Unilateral & Isosoles
Equalateral, Isosceles, Scalene; Acute, Obtuse, Right
Classifications by side length or comparison of angles and sides:scalene - no sides or angles equalisosceles - two sides and angles equal (congruent)equilateral - all sides and angles equal (all 60° angles)Classifications by included angles :right triangle - contains a 90° angle (right angle)oblique triangle - has no right angleacute triangle - contains all angles less than 90°obtuse triangle - contains one angle greater than 90°*Note that a triangle can be more than one type. A right triangle is a special case of either a scalene or isosceles triangle.
The question "What are the classifications of a triangle" is answered elsewhere. The angles in a triangle can be either an obtuse >90 degrees, an acute <90 degrees, or a rectal = 90 degrees
trianglessj
Unilateral & Isosoles
Triangles fall into the following 5 classifications:- 1 Scalene triangle 2 Right angle triangle 3 Obtuse triangle 4 Isosceles triangle 5 Equilateral triangle
Equalateral, Isosceles, Scalene; Acute, Obtuse, Right
Classifications by side length or comparison of angles and sides:scalene - no sides or angles equalisosceles - two sides and angles equal (congruent)equilateral - all sides and angles equal (all 60° angles)Classifications by included angles :right triangle - contains a 90° angle (right angle)oblique triangle - has no right angleacute triangle - contains all angles less than 90°obtuse triangle - contains one angle greater than 90°*Note that a triangle can be more than one type. A right triangle is a special case of either a scalene or isosceles triangle.
A triangle with angles measuring 50, 60, and 70 degrees is an acute triangle, as all its angles are less than 90 degrees. The sum of the angles is 180 degrees, which is a requirement for any triangle. This particular triangle does not conform to any special triangle classifications like isosceles or equilateral, as all its angles are different.
Classifications by side length or comparison of angles and sides:scalene - no sides or angles equalisosceles - two sides and angles equal (congruent)equilateral - all sides and angles equal (all 60° angles)Classifications by included angles :right triangle - contains a 90° angle (right angle)oblique triangle - has no right angleacute triangle - contains all angles less than 90°obtuse triangle - contains one angle greater than 90°
Classifications by side length or comparison of angles and sides:scalene - no sides or angles equalisosceles - two sides and angles equal (congruent)equilateral - all sides and angles equal (all 60° angles)Classifications by included angles :right triangle - contains a 90° angle (right angle)oblique triangle - has no right angleacute triangle - contains all angles less than 90°obtuse triangle - contains one angle greater than 90°
Classifications by side length or comparison of angles and sides:scalene - no sides or angles equalisosceles - two sides and angles equal (congruent)equilateral - all sides and angles equal (all 60° angles)Classifications by included angles :right triangle - contains a 90° angle (right angle)oblique triangle - has no right angleacute triangle - contains all angles less than 90°obtuse triangle - contains one angle greater than 90°
ABCD is a square, which means it is a type of quadrilateral that has four equal sides and four right angles. Classifications that apply include being a rectangle, a rhombus, and a regular polygon, as all sides and angles are equal. Classifications that do not apply include being a triangle or a trapezoid, as these shapes have different properties in terms of sides and angles.
An isoceles triangle has at least two sides equal; an equilateral has three sides equal so it is also isoceles; and since all angles are acute it is also an acute traingle