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The triangles sum says that the 3 angle in a triangle always equal 180?
Wiki User
∙ 14y ago
The three angles of a triangle are always equal to 180°, if not equal to 180° then it is not a triangle.
Wiki User
∙ 14y ago
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Dividing a rectangle in half diagonally always produces two equal triangles?
Yes, two equal right-angle triangles.
Are two right triangles similar if an acute angle of one triangle is congruent to an acute angle of the other triangle?
Yes, you have two congruent angles in each triangle, one right and one acute so the third angles must be equal also.
Can a triangle be split into two equal right angled triangles?
no a triangle can not be slipt into equal parts.
Does a right triangle have two equal sides?
A right triangle can NEVER have two equal sides (in euclidean space). Triangles with two equal sides are known as isosceles triangles.
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
Are isoceles triangles always symmetrical?
for a triangle to be an isosceles triangle, two of its sides and its corresponding angle must be equal. all isosceles triangles have at least one line of symmetry
Why are triangles not equilateral?
All sides on a triangle can be equal. If they are each angle will equal 60 degrees.
How is classifying a triangle as a right triangle different from classifying it as an equilateral triangle?
Right Triangles = 1 angle is 90 degrees Equilateral Triangles = Triangles with all three sides are equal in length
What are not congruence theorems?
I am guessing you are interested in triangles. Here are two false triangle congruence theorem conjectures.1, If the angles of one triangle are equal respectively to the angles of another triangle, the triangles are congruent. ( abbreviated AAA).2. If two sides and one angle of a triangle are equal respectively the two sides and one angle of another triangle, the triangles are congruent. (abbreviated SSA)Comment: Draw triangles with pairs of equal sides but in which the included angle between the equal sides is acute in one case and obtuse in the others.
List and describe the 5 ways triangles can be classified by their angle?
Right angle triangle has a 90 degree angle and two acute anglesEquilateral triangle has 3 equal anglesIsosceles triangle has 2 equal anglesScalene triangles has 3 acute angles of different sizesObtuse triangle has 1 obtuse angle and 2 different acute angles
Are angles in an isoceles triangle equal?
Isosceles triangles have at least 2 equal angles. The 3rd angle can either be equal to the other two (it's then called an equilateral triangle), or it can be different from the two equal angles, in which case it's an isosceles triangle. All equilateral triangles are isosceles triangles, but not all isosceles triangles are equilateral triangles.
Relations among the angles of a triangle?
In a triangle, the sum of the angles is always 180 degrees. This is known as the angle sum property of triangles. Additionally, the largest angle in a triangle is always opposite the longest side, and the smallest angle is opposite the shortest side.
What is a line that divides an angle of a triangle into two equal triangles?
A perpendicular bisector line depending on what type of triangle it is.
What Three types of triangles that can be named by their sides?
Scalene triangle ( no sides equal, and often has one angle that is longer than 90*) Isoceles triangle ( 2 sides equal, always has 90* angle) and Equilateral triangle ( all sides equal, all angles are less that 90* ). When I say equal and stuff I'm talking about how long their sides are. Note: * = degrees... Also all triangles have angles that are 180 degrees....
Are triangles congruent if so how do you know?
ASA stands for "angle, side, angle" and means that we have two triangles where we know two angles and the included side are equal. If two angles and the included side of one triangle are equal to the corresponding angles and side of another triangle, the triangles are congruent.
How many sides does a right angle triangle have?
It has 2 equal sides of right triangle.
What is special about a scalene triangle?
A scalene triangle is different from all other triangles because every side is a different length and every angle is different as well. This is different from isosceles triangles, which always have two sides and two angles that are the same. It is also different from equilateral triangles, which have all equal sides and all equal angles.
