How do you classify a triangle by its angles?

Triangles can also be classified by their angles. In an acute triangle all three angles are acute (less than 90 degrees). A right triangle contains one right angle and two acute angles. And an obtuse triangle contains one obtuse angle (greater than 90 degrees) and two acute angles.

What are the 3 ways to classify a triangle by its sides?

We can also classify triangles by their sides.

  • scalene triangle-a triangle with no congruent sides.
  • isosceles triangle-a triangle with at least 2 congruent sides (i.e. 2 or 3 congruent sides)
  • equilateral triangle-a triangle with exactly 3 congruent sides.
  • NOTE:

What are the classification of angles?

There are four classifications of angles according to their measure: acute, right, obtuse, and straight.

What are the 3 angles of a triangle?

A triangle contains interior angles and exterior angles. Interior angles are three angles found inside a triangle. Exterior angles are formed when the sides of a triangle are extended to infinity. Therefore, exterior angles are formed outside a triangle between one side of a triangle and the extended side.

How can you classify the angles?

An acute angle is an angle which measures less than 90 degrees. A right angle measures 90 degrees. An obtuse angle measures more than 90 degrees but less than 180 degrees. A straight angle is an angle measuring 180 degrees while a refrex angle measures more than 180 degrees.

How do we identify and describe a triangle according to its sides and angles?

Triangles can be classified by their sides and by their angles. When classifying a triangle by its sides, you should look to see if any of the sides are the same length. If no sides are the same length, then it is a scalene triangle. If two sides are the same length, then it is an isosceles triangle.

How do you classify an angle by its angles and sides?

An obtuse triangle is a triangle with one angle that is greater than 90 degrees. A right angle is an angle equal to 90 degrees. A scalene triangle is a triangle in which all three sides are different lengths. A polygon is equilateral if all of its sides are the same length.

How do you classify each angle?

Straight angles are exactly 180 degrees. Obtuse angles are between 90 and 180 degrees. Acute angles are between 0 and 90 degrees. Reflex angles are between 180 and 360 degrees.

How do you classify an angle?

Angles can be either straight, right, acute or obtuse. An angle is a fraction of a circle where the whole circle is 360°. A straight angle is the same as half the circle and is 180° whereas a right angle is a quarter of a circle and is 90°. You measure the size of an angle with a protractor.

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