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Using angles and sides:
- All three angles equal. This implies that all three sides are of the same length. The triangle may be known as an equiangular triangle but, more commonly, equilateral triangle.
- Two equal angles, which implies that two sides are equal. The triangle is an isosceles triangle.
- All three angles (and therefore sides) are different. This is known as a scalene triangle.
Using angles only:
- If all angles are less than 90 degrees it is an acute angles triangle.
- If one angle is 90 degrees, a right angled triangle.
- If one angle is greater than 90 degrees then an obtuse angled triangle.
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How do i classify a polygon using their attributes?
The primary classification of a polygon is according to the number of sides (or vertices) that it has.If all the sides are of equal length and all the angles are of the same measure then it is a regular polygon.If any of the angles is a reflex angle then it is a concave polygon, otherwise it is convex.
How do you solve for triangle side lengths?
All triangles have 3 sides and 3 interior angles that add up to 180 degrees. If you know the lengths of 2 sides of a triangle then the length of the 3rd side can be found by using trigonometry.
How do I classify polygons using their attributes?
The answer depends on what attributes you want to use for classification. These could be:number of sides (vertices),whether or not all sides are equal,whether or not all angles are equal,whether or not all sides and angles are equal (regular),number of parallel sides,number of perpendicular sides,order of rotational symmetry,number of lines of symmetry,convex or concave,various combinations of the above.
What information do you need in order to prove the triangles congruent using congruence postulate?
You need enough information about both triangles to be able to compareany one of the following packages of parts of both of them:-- the length of any two sides and the size of the angle between them-- the size of any two angles and the length of the side between them-- the lengths of all three sides.
Can you make a square without using any triangles from a tangram?
no because it has to be all equal and right angles
How do you classify triangles using their attributes?
All triangles have 3 sides and 3 interior angles that add up to 180 degrees and are classified as follows:- Scalene triangle has 3 different acute angles Obtuse triangle has an obtuse angle and 2 different acute angles Right angle triangle has a 90 degree angle Isosceles triangle has 2 equal sides and 2 equal base angles Equilateral triangle has 3 equal sides and 3 equal 60 degree angles
What shape is formed using 5 congruent triangles and has 5 vertices 5 angles 5 sides?
pentagon
How do you make 3 equal sides to a triangle?
For equal sides make an Equilateral triangle. Equilateral triangles have 3 internal angles of 60o. All 3 sides are equal length. Make one using those characteristics.
How do i classify a polygon using their attributes?
The primary classification of a polygon is according to the number of sides (or vertices) that it has.If all the sides are of equal length and all the angles are of the same measure then it is a regular polygon.If any of the angles is a reflex angle then it is a concave polygon, otherwise it is convex.
What are the angles in a triangle that has sides of 123cm 79cm and 97cm?
Using the cosine formula for triangles the opposite angles of the given sides are 88.05 degrees, 39.93 degrees and 52.02 degrees respectively all rounded to two decimal places.
Using indirect reasoning to show that a triangle cannot have two right angles?
Triangles total 180 degrees. Triangles have three angles. Two angles of 90 degrees total 180 degrees.
How do you draw a triangle using geometry in a7 b24?
Triangles can be drawn in various shapes and sizes but they all have 3 sides and 3 interior angles that add up to 180 degrees.
How do you solve for triangle side lengths?
All triangles have 3 sides and 3 interior angles that add up to 180 degrees. If you know the lengths of 2 sides of a triangle then the length of the 3rd side can be found by using trigonometry.
What are the properties of isosceles triangles?
All isosceles triangles: - Have angles that add up to 180 degrees - Have two equal sides. The unequal side is called the base. - Have equal base angles. - Have areas and perimeters that can be found using the formulas Area=1/2 X (base X height) and Perimeter=side+side+side An equilateral triangle with a right angle is called a right isosceles triangle. Also, all equilateral triangles are isoceles triangles, but not all isosceles triangles are right triangles.
How do I classify polygons using their attributes?
The answer depends on what attributes you want to use for classification. These could be:number of sides (vertices),whether or not all sides are equal,whether or not all angles are equal,whether or not all sides and angles are equal (regular),number of parallel sides,number of perpendicular sides,order of rotational symmetry,number of lines of symmetry,convex or concave,various combinations of the above.
What information do you need in order to prove the triangles congruent using congruence postulate?
You need enough information about both triangles to be able to compareany one of the following packages of parts of both of them:-- the length of any two sides and the size of the angle between them-- the size of any two angles and the length of the side between them-- the lengths of all three sides.
Can you make a square without using any triangles from a tangram?
no because it has to be all equal and right angles
