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# What types of triangles have at least two acute angles?

Updated: 10/25/2022

Wiki User

11y ago

All triangles need at least two acute angles

Wiki User

11y ago

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Q: What types of triangles have at least two acute angles?
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### What is anther types of a triangles?

Triangles can be classified by their sides: equilateral, isosceles, scalene or by their angles: acute, right, obtuse. Combinations are possible.

### What is a acute trianlge?

an acute triangle is a triangle that has corner angles all below 90 degrees. there are three types of triangles: obtuse, right, and acute. obtuse triangles have one corner angle greater than 90 degrees, right triangles have one angle equal to 90 degrees, and acute triangles have all corner angles less than 90 degrees.

### Triangle with all angles less than ninety?

In plane geometry, all triangles have the sum of the angles to be 180 degrees. So There are many triangles with all the angles less than 90. ( if one angle is more than 90 degrees, then its called 'obtuse' , if all the angles are less than 90, then its called 'Acute' ). Two types of triangles with angles less than 90 degrees are Equalaterial and Isocoles. ( Equalaterial have two equal angles, Isocoles have three equal angles, all 60 degress ). You can think in terms of sets: The subset of Triangles is Acute, The subset of Acute Triangles is Equalateral, The subset of Equalateral Triangles is Isocoles. {Triangles{Obtuse|Acute{Equlaterial{Isocoles

### What is triangle and who many types of triangle?

A triangle is a 2-dimensional closed shape (called a polygon) with 3 sides. The three sides form a closed shape with three interior angles, hence the name "tri-angle." There are three general types of triangles: they are called Acute, Obtuse, and Right Triangles. Acute Triangles contain interior angles that are all less than 90 degrees. Obtuse Triangles contain one (and only one) interior angle that is greater than 90 degrees. Right Triangles contain one (and only one) angle that is exactly 90 degrees. There are also sub-types of triangles; the most common sub-types are Equilateral and Isoscles Triangles. The interior angles of Equilateral Triangles are all 60 degrees. At least two interior angles of Isoscles Triangles are equal to each other.

### What are the kinds of angle and triangle?

Types of angles: acute, right angle, obtuse and reflex Types of triangles: equilateral, isoceles, right angle triangle and scalene

### What is the difference between scalene obtuse and acute triangles?

There are two questions that have been mixed up here. There are three "main" types of angle: Acute, Obtuse and Reflex. Acute angles are from 1 to 89 degrees, Obtuse angles from 91 to 179 and Reflex angles anything over 181 degrees. An angle of 90 degrees is a right angle, and an angle of 180 degrees is just a line. There are three types of triangle: Equilateral, Isosceles and Scalene. Equilateral triangles have all three sides the same length (and the angles are all 60 degrees), isosceles triangles have two equal-length sides of length and two equal angles, and scalene triangles have all three sides different lengths, and all three angles are different.

### What are three types of triangles that are or can be acute?

Acute scalene triangle: A triangle with three sides of different lengths and all three angles less than 90 degrees. Acute isosceles triangle: A triangle with at least two sides of equal length and all three angles less than 90 degrees. Acute equilateral triangle: A triangle with three equal sides and all three angles measuring less than 60 degrees.

### Are angles acute or obtuse?

there are 4 types of common angles. right, obtuse, acute, and straight.

### Why can a triangle have three acute angles?

YES!!! The types of triangle and their angles. Equilateral ; all 60 degrees ; acute. Isosceles; All three acute angles, or two acute angles and one obtuse angle. Right angles ; One 90 degree angle and two acute angles. Scalene ; All three acute , or two acute and one obtuse. NB There are no such triangles with two or three obtuse angles.

### What are the characteristics of the different types of triangles?

All triangles have 3 sides and 3 interior angles that add up to 180 degrees and they are graded as follows:- Scalene triangle has 3 different acute angle Right angle triangle has a 90 degree angle and 2 acute angles Obtuse triangle has 1 obtuse angle and 2 acute angles Equilateral triangle has 3 equal sides and 3 equal angles of 60 degrees Isosceles triangle has 2 equal sides and 2 equal base angles

### What are four types of angles?

There are right angles, acute angles, obtuse angles, and straight angles.

### What are the four types of triangles?

right obtuse acute and scalene