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Classification of triangles (view source)
Revision as of 01:52, 6 December 2013
, 01:52, 6 December 2013Created page with "=Triangles differentiated on the basis of their sides= == Equilateral Triangles: == picture of equilateral triangle A triangle ..."
=Triangles differentiated on the basis of their sides=
== Equilateral Triangles: ==
[[Image:KOER%20Triangles_html_m55b3a2cf.png|picture of equilateral triangle]]
A triangle with all sides equal to one another is called an equilateral triangle.
== Isosceles Triangle: ==
A triangle with a pair of equal sides is called an isosceles triangle.
[[Image:KOER%20Triangles_html_m34248090.png]]
== Scalene Triangle: ==
A triangle in which all the sides are of different lengths and no two sides are equal,
the triangle is called a scalene triangle.
= Triangles differentiated on the basis of their angles. =
==Acute angled triangle. ==
A triangle whose all
angles are acute is called an acute-angled triangle or simply an acute triangle.
[[Image:KOER%20Triangles_html_m62898a77.png]]
[[Image:KOER%20Triangles_html_m732d9c3d.png]]A right triangle has one angle 90°
'''Right Isosceles Triangle :'''
[[Image:KOER%20Triangles_html_m37b6213c.png]]Has
a right angle (90°), and also two equal angles
Can you guess what
the equal angles are?
=The Obtuse Triangle=
[[Image:KOER%20Triangles_html_15a07649.png|Obtuse Triangle]]
The Obtuse Triangle has an obtuse angle (an obtuse angle has more than 90°). In the picture on the left, the shaded angle is the obtuse angle that distinguishes this triangle. Since the total degrees in any triangle is 180°, an obtuse triangle can only have one angle that measures more than 90°.
== Interior angles of a triangle ==
The interior angles are
those on the inside of the triangle.
[[Image:KOER%20Triangles_html_m55b3a2cf.png]]
== Exterior Angles of a triangle ==
An exterior angle is formed by extending any side
of the triangle.
[[Image:KOER%20Triangles_html_9fb9ff3.png]]
== Equilateral Triangles: ==
[[Image:KOER%20Triangles_html_m55b3a2cf.png|picture of equilateral triangle]]
A triangle with all sides equal to one another is called an equilateral triangle.
== Isosceles Triangle: ==
A triangle with a pair of equal sides is called an isosceles triangle.
[[Image:KOER%20Triangles_html_m34248090.png]]
== Scalene Triangle: ==
A triangle in which all the sides are of different lengths and no two sides are equal,
the triangle is called a scalene triangle.
= Triangles differentiated on the basis of their angles. =
==Acute angled triangle. ==
A triangle whose all
angles are acute is called an acute-angled triangle or simply an acute triangle.
[[Image:KOER%20Triangles_html_m62898a77.png]]
[[Image:KOER%20Triangles_html_m732d9c3d.png]]A right triangle has one angle 90°
'''Right Isosceles Triangle :'''
[[Image:KOER%20Triangles_html_m37b6213c.png]]Has
a right angle (90°), and also two equal angles
Can you guess what
the equal angles are?
=The Obtuse Triangle=
[[Image:KOER%20Triangles_html_15a07649.png|Obtuse Triangle]]
The Obtuse Triangle has an obtuse angle (an obtuse angle has more than 90°). In the picture on the left, the shaded angle is the obtuse angle that distinguishes this triangle. Since the total degrees in any triangle is 180°, an obtuse triangle can only have one angle that measures more than 90°.
== Interior angles of a triangle ==
The interior angles are
those on the inside of the triangle.
[[Image:KOER%20Triangles_html_m55b3a2cf.png]]
== Exterior Angles of a triangle ==
An exterior angle is formed by extending any side
of the triangle.
[[Image:KOER%20Triangles_html_9fb9ff3.png]]