An Isosceles Triangle.
What are the properties of the various triangles given:Isosceles triangles have two sides equal, two angles equalScalene triangles have all three sides different and all three angles differentRight triangles have one angle which is a right angle (90°)acute triangles have all angles less than 90°obtuse triangles have one angle greater than 90°As an isosceles triangle has two sides equal, it cannot be a scale triangle which has all three angles different.For the other three properties, consider:The sum of the angles in a triangle is 180°If one angle is 90°, the other two angles could be: (180° - 90°) / 2 = 45° each - two angles the same→ an isosceles triangle could be a right triangleIf all angles are less than 90°, let one angle be 80°, the other two angles could be: (180° - 80°) / 2 = 50° each - two angles the same→ an isosceles triangle could be an acute triangle(Note that if one angle was 60°, then the other two being equal would be: (180° - 60°) / 2 = 60° each making all three angles the same and the triangle an equilateral triangle)If one angle is greater than 90°, let it be 100°, the other two angles could be: (180° - 100°) / 2 = 40° each - two angles the same→ an isosceles triangle could be an obtuse triangleFrom the given list, an isosceles triangle could be a right, acute or obtuse triangle, but it could not be a scalene triangle.
An acute angled scalene triangle.
Angles have toad to 180 degrees to be triangle so you have no triangle as angles add to 190. If angle is 116 degrees instead of 126 degrees you have isosceles triangle
acute-angled triangle
A right triangle - one of the angles has to be 90 degrees
An acute angled triangle.
An acute angled triangle.
Isosceles triangle
There are two equal acute angles. The third angle can be acute, right or obtuse.
In an equilateral triangle all the angles are 60 degrees (i.e. acute angles)
An acute triangle.
A scalene triangle
Since every type of triangle has a total of 180 degrees of angles, simply deduct the 90 of a right triangle, leaving you with a balance of ___ for the remaining acute angles.
If one of the angles is 90 degrees then it is right ange triangle If one of the angles is obtuse then it is an obtuse triangle If the three angles are 3 different acute then it is a scalene triangle If two of the angles are equal then it is an isosceles triangle If the three angles are equal then it is an equilateral triangle
equalateral. however you spell that.
isosceles
It is an equilateral triangle