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What is an acute equilateral triangle?
An equilateral triangle must be acute because each angle is equal to 60 degrees. If all three angles are less than 90 degrees then a triangle is acute.
Is an acute angle an equilateral triangle?
An equilateral triangle has 3 interior equal acute angles each measuring 60 degrees. In general an acute angle is greater than 0 but less than 90 degrees.
Can a reflex angle be 360 degrees?
No. A reflex angle is strictly greater than (not equal to) 180 degrees and strictly less than (not equal to) 360 degrees.
What do you call A triangle with all angles less than 90 degrees?
It is a scalene triangle that has 3 different interior acute angles that add up to 180 degrees
What are a score or more facts about the properties of angles and triangles?
1 Angles are measured in degrees, minutes and seconds 2 Angles greater than 0 but less than 90 degrees are acute 3 Angles of 90 degrees are right angles 4 Angles greater the 90 but less than 180 degrees are obtuse 5 Angles greater than 180 but less than 360 degrees are reflex 6 Angle of 360 degrees is a full rotation 7 Triangles are 3 sided polygons 8 Triangles have 3 inside angles that add up to 180 degrees 9 Triangles have 3 outside angles that add up to 360 degrees 10 Triangle that is scalene has 3 different acute angles 11 Triangle that is a right angle triangle has a 90 degree angle and 2 acute angles 12 Triangle that is obtuse has 1 obtuse angle and 2 acute angles 13 Triangle that is isosceles has 2 equal base angles and 2 equal sides 14 Triangle that is equilateral has 3 equal inside angles and 3 equal sides 15 Triangles have no diagonals 16 Triangles will tessellate leaving no gaps or overlaps 17 Triangle's area is 0.5*base*perpendicular height 18 Triangle's perimeter is the sum of its 3 sides 19 Triangle as a right angle triangle is subject to Pythagoras' theorem 20 Triangles are subject to the rules of trigonometry 21 Triangles are the corner stones of all other polygons
What is isosceles triangle degrees?
The two equal angles can be any angle less than 90 degrees, and the third angle can be any angle less than 180 degrees.
What triangle has no equal sides and one more than 90 degrees?
An obtuse triangle has 1 angle greater than 90 degrees and 2 angles less than 90 degrees but of different sizes
What are the classifications of a triangle?
The classifications of a triangle are:Right Triangle- has one angle that is 90 degreesEquilateral Triangle- has three equal sides and three equal angles (each is 60 degrees)Isosceles Triangle- has two equal sides and two equal anglesScalene Triangle- has no congruent sidesAcute Triangle- has three acute angles (less than 90 degrees)Obtuse Triangle- has one obtuse angle (more than 90 degrees)
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.
What is an acute equilateral triangle?
An equilateral triangle must be acute because each angle is equal to 60 degrees. If all three angles are less than 90 degrees then a triangle is acute.
When will a triangle not equal 180 degrees?
never In non-Euclidean geometry triangles can have angles that are more or less than 180 degrees.
Is an equilateral always an acute triangle?
Because each of its equal interior angles are less than 90 degrees.
Is a triangle convex or concave?
Three vertices polygons (aka triangle) can not be concave or convex because it doesn't have enough verticies to susustain an internal angle is less than or equal to 180 degrees. * * * * * Actually, a triangle IS a convex polygon. Convexity requires angle to be less than 180 degrees and since the three angles of a triangle sum to 180 degrees, each one of them MUST be less than 180 degrees!
How do you classify a triangle with only one angle?
If you only know one angle, that angle is greater than 90 degrees, then the triangle is obtuse If that angles is equal to 90 degrees, then the triangle is a right triangle. If it is less than 90 degrees, you don't know enough information to classify the triangle.
How do you draw a isosceles obtuse triangle?
It needs to have two equal angles, each of which is less than 45 degrees.
What is a triangle that has one angle less than 90 degrees?
If all three angles are less than 90 degrees, then it is called an Acute Triangle. If two angles are less than 90 degrees and the other one is 90 degrees, then it is called a Right Triangle. If one angle is more than 90 degrees and the other two are less than 90 degrees, then it is called an Obtuse Triangle. Hope this helps!
Triangles with all angles less than 90 degrees?
this is known as an acute triangle acute triangles-no angles congruent or greater than 90 degrees right-one angle equal to 90 degrees obtuse-triangle with one angle greater than 90 degrees
