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An angle whose measure is greater than 90° and less than 180° is called an obtuse angle. Learn more about obtuse angles, their properties, degrees, along with solved examples and practice questions.
- Isosceles Obtuse Triangle
In geometry, an isosceles obtuse triangle can be considered...
- Obtuse Scalene Triangle
In geometry, an obtuse scalene triangle can be defined as a...
- Pair of Angles
Pairs of Angles. When angles appear in groups of two to...
- Types of Angles
Supplementary angles: Two angles are considered...
- Triangle Calculator
How to Use the Triangle Calculator? Please follow the below...
- Angle Sum Property
A triangle has three sides and three angles, one at each...
- Isosceles Obtuse Triangle
An obtuse angle is an angle with angle measure greater than 90° and less than 180°. In other words, it lies between 90° and 180°. So, what does an obtuse angle look like? How many degrees does an obtuse angle measure? Take a look at the given Obtuse Angle diagram to understand its range better.
Where two lines meet or cross, they form an angle. An angle is an amount of rotation. It is measured in degrees. Types of angles Name of angle Example Size of angle Acute angle Between 0° and 90° Right angle Equal to 90° Obtuse angle Between 90° and 180° Straight line Equal to 180° Reflex angle Between 180° and 360°
There are two main ways to label angles: 1. give the angle a name, usually a lower-case letter like a or b, or sometimes a Greek letter like α (alpha) or θ (theta) 2. or by the three letters on the shape that define the angle, with the middle letter being where the angle actually is (its vertex).
An obtuse angle has measure between \(90^{\circ}\) and \(180^{\circ}\). In this section we will define the trigonometric ratios of an obtuse angle as follows. Place the angle \(\theta\) in standard position and choose a point \(P\) with coordinates \((x, y)\) on the terminal side.
Obtuse triangle: a triangle with one obtuse angle. Right triangle: a triangle with one right angle. Exercises. True or False: Give a reason or counterexample to justify your response. An equilateral triangle is always acute. An obtuse triangle can also be isosceles.
Based on their measurements, angles are classified as acute, right, obtuse, straight, or reflex. In a right triangle, one angle is exactly 90 degrees, forming an “L” shape. Angles in a straight line add up to 180 degrees.
