An acute exterior angle is a triangle with a supplement greater than 90 degrees, which is one of the interior angles. The remaining two interior angles must add up to less than 90 degrees. The exterior angle of a triangle is formed with one side and the adjacent extended side of the triangle. There are three exterior angles in a triangle, and the sum of the exterior angles is always equal to 360°. Every triangle has six exterior angles, two at each vertex.
The exterior angle theorem states that if any side of a triangle is extended, then the exterior angle so formed would be equal to the sum of the opposite interior angles of a triangle. The measure of an exterior angle of a triangle is equal to the sum of the two non-adjacent interior angles of the triangle. Congruent triangles have all their corresponding angles.
Acute angle triangles are those in which all interior angles are acute angles, meaning they are less than 90°. If an exterior angle drawn to a triangle is acute, the triangle formed will be an obtuse-angled triangle. A triangle with exactly one acute angle means that the other two angles are right or obtuse, which does not exist.
There are two answers to this question: No. An acute triangle can never have an acute exterior angle, and an interior angle plus its exterior partner add up to 180 degrees. In order for an exterior angle to be acute, its interior partner would have to be obtuse. If an exterior angle is acute, it means the adjacent triangle’s angle is obtuse.
📹 Exterior Angle Theorem For Triangles, Practice Problems – Geometry
This geometry video tutorial provides a basic introduction into the exterior angle theorem for triangles. It explains how to use it …
Can a triangle be drawn with exactly one acute angle?
It is a fundamental property of a triangle in the plane that it cannot have fewer than two acute angles. This is because a triangle with only one acute angle would have two obtuse angles and a sum of interior angles greater than 180 degrees, which is not possible.
How do you find the exterior angle of a triangle with one angle?
The exterior angle of a triangle is the angle formed between one of its sides and its adjacent extended side. There are three exterior angles in a triangle, each forming a linear pair with its corresponding interior angle. The interior angle of a triangle is formed inside it where the sides meet at a vertex. The sum of each exterior angle and its respective interior angle is equal to 180°. The exterior angle of a triangle is formed when any side of a triangle is extended, and it is formed when the sides meet at a vertex. The formula for calculating the corresponding exterior angle is Each Exterior angle = 180° – Interior angle.
Can a triangle have only one acute angle?
A triangle is defined as a polygon with three sides and at least two acute angles.
What is a triangle with one obtuse angle?
An obtuse-angled triangle is defined as a type of triangle with any one angle being an obtuse angle, or greater than 90°. The sum of the interior angles of an obtuse triangle is equal to 180°, which demonstrates that the angle sum property remains constant. If one angle is obtuse or greater than 90°, the other two angles are either acute or less than 90°. The properties of obtuse angle triangles are subject to variation.
Can a triangle have an acute exterior angle?
If the exterior angle of a triangle is acute, it will form an obtuse-angled triangle.
Can a triangle be drawn with exactly one right angle?
A right-angled triangle has one angle equal to 90 degrees, with the other two angles adding up to 90 degrees. The sides that include the right angle are perpendicular and the base of the triangle. The third side, the hypotenuse, is the longest side of all three sides. The relationship between the three sides is explained by the Pythagoras theorem, which states that the area of the biggest square is equal to the sum of the squares of the two other small square areas.
Can an acute triangle have one right angle?
A scalene triangle is defined as a triangle with angles of 90°, 40°, and 50° (right-angled), or an obtuse triangle with angles of 30°, 50°, and 100° (obtuse). The three interior angles of an acute triangle must be less than 90°, whereas a right triangle must have an angle measuring precisely 90°. This indicates that a right triangle cannot be acute.
What if one exterior angle of a triangle is acute then the triangle must be?
If the exterior angle of a triangle is acute, it will form an obtuse-angled triangle.
Can all the angles of a triangle be acute yes or no?
In a triangle with sides of length a, b, and c, where 0° ≤ α ≤ π, β ≤ π/2, and γ ≤ π, the triangle is said to be an acute angle triangle or acute-angled triangle. The area and perimeter of an acute triangle can be calculated using the formula A = ½bh, where A is the area, b is the length of the base, and h is the height.
How do you find the number of sides with one exterior angle?
In order to ascertain the number of sides, it is necessary to divide 360 by the exterior angle, which is 30. The result is 12, which should be calculated.
Which type of triangle can have only acute angles?
An acute triangle has three acute angles less than 90°, while an obtuse triangle has one obtuse angle greater than 90° and two acute angles. In Euclidean geometry, no triangle can have more than one obtuse angle. Acute and obtuse triangles are two types of oblique triangles, not right triangles due to their lack of right angles. The centroid and incenter are in the interior of all triangles, while the orthocenter and circumcenter are in an acute triangle’s interior and exterior to an obtuse triangle.
📹 Angles of Triangle: Sum of Interior Angles and Exterior Angle Theorem by @MathTeacherGon
Angles of Triangle: Sum of Interior Angles and Exterior Angle Theorem by @MathTeacherGon Follow me on my social media …
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