0
Add your answer:
Earn +20 pts
How many obtuse angles could an isosceles triangle have?
An Isosceles Triangle is a triangle with all angles less than 90o So there are no obtuse angles (between 90o to 180o).
What shape has obtuse angles triangle hexagon pentagon or square?
A hexagon or pentagon will have obtuse angles (greater than 90 degrees). A triangle has angles that are all less than 90 and a square has only 90.
Do triangles have at least 2 acute angles?
Yes. The sum of the angles in a triangle is 180° All angles in a triangle must be greater than 0° which means that the sum of any two angles must be less than 180° If two angles are right angles (90°), their sum is 180° which is not less than 180°; thus at most one angle can be a right angle. If one angle is a right angle and another is an obtuse angle (greater than 90°), then their sum is greater than 180°, which is not less than 180°; thus there can be at most one of a right angle and an obtuse angle. If two angles are obtuse angles, their sum is greater than 180°, which is not less than 180°; thus there can be at most one obtuse angle. If there is at most one right angle or an obtuse angle, there must be at least two acute angles.
What shape has all angles greater than 90 degrees?
All the angles in an octagon are obtuse. (Obtuse means greater than 90 degrees.)
Why can a triangle not have more than one obtuse angle?
Since all triangles have exactly 180º and an obtuse angle is an angle greater than 90º but less than 180º if you had two obtuse angles, that would leave 0º or less left over for the final angle of the triangle.
Is a straight angle less then an obtuse angle?
no it is more. obtuse is 91 - 179 and straight angles are all 180
Triangle with all angles less than ninety?
In plane geometry, all triangles have the sum of the angles to be 180 degrees. So There are many triangles with all the angles less than 90. ( if one angle is more than 90 degrees, then its called 'obtuse' , if all the angles are less than 90, then its called 'Acute' ). Two types of triangles with angles less than 90 degrees are Equalaterial and Isocoles. ( Equalaterial have two equal angles, Isocoles have three equal angles, all 60 degress ). You can think in terms of sets: The subset of Triangles is Acute, The subset of Acute Triangles is Equalateral, The subset of Equalateral Triangles is Isocoles. {Triangles{Obtuse|Acute{Equlaterial{Isocoles
How are acute and obtuse triangles the same?
Similarities between these and all triangles are:They all have 3 sides and 3 angles. The sum of the three angles adds up to 180°.An acute angle is less than 90 degrees. An acute triangle has all three sides are acute.An obtuse angle is more than 90 degrees. An obtuse triangle has one angle which is obtuse, and because of the 180° rule above, the other two angles will be acute.So all triangles will have at least two acute angles.
Which angle of all the angles equals 121 degrees?
121 degrees is an obtuse angle because it is greater than 90 but less than 180 degrees
Does a hexagan have any obtuse angles?
A regular hexagon has all angles obtuse.
Why can't a quadrilateral have no more than three obtuse angles?
The sum of all the interior angles of a quadrilateral is 360 degrees. If it had more than three obtuse angles, then it would have all four angles greater than 90 degrees so that their sum would be greater than 360 degrees.
Does a parallelogram have obtuse angles?
can do depends on what parallelogram it is. A parallelogram is a 4 sided shape with opposite sides equal in length and parallel, and opposite angles equal. So if two of the angles are acute (less than 90o), their sum is less than 180o, leaving greater than 180o for the remaining two angles (since the four angles sum to 360o as the shape is a quadrilateral), meaning that each of them is greater than 90o and thus obtuse. However, if two of the angles are 90o, then the other two are also 90o and so all the angles are right angles and none of them is obtuse. (A rectangle is a parallelogram as it has opposite sides of equal length and parallel, and opposite angles equal.)
What is a triangle called with all 3 obtuse angles?
the sum of the 3 angles in a triangle add up to 180 degrees. an obtuse angle is bigger than 90 degrees if u have two obtuse angles they are 180 degress so it is impossible to hve a triangle with 3 obtuse angles
Why cant you have two obtuse angles in a triangle?
Angle sum property of a triangle states that the sum of angles in any triangle should be 180 degree. An angle greater than 90 degree is an obtuse angle. If we have 2 obtuse angles in a triangle, say, 95 degree, 100 degree & 50, it always tend to violate the angle sum property of the triangle. So we cannot have 2 obtuse angles in a triangle.
Why can't a quadrilateral have more than three obtuse angle?
because if it has more than three obtuse angles than its not a quadrilateral.This is because a quadrilateral has 360 degrees, right? Well an obtuse angle is an angle greater than 90 degrees. That being said the smallest obtuse angle you can have is 91 degrees. If you have four obtuse angles, then the sum of them is greater than 360 (ex: 91+91+91+91=364) and it's geometrically impossible to draw a quadrilateral with 4 obtuse angles.Three obtuse angles are possible if the fourth is acute(less then 90 degrees) and they all add up to 360.-skerr7464
Why are all obtuse angles not the same size?
They are not all the same because obtuse angles vary from 90 degree angles to 180 degree angles.
Can a triangle have 3 obtuse angles?
No, a triangle can't have more than 1 obtuse angle because all the angles have to equal 180 degrees, and an obtuse angle is larger than 90 degrees. if it had more than 1 obtuse angle, the angles wouldn't equal 180 degrees and you wouldn't be able to make a third angle.
