Mathematics
Grade9
Easy
Question
Classify the triangle by its sides and angles
- Acute & scalene
- Acute & isosceles
- Obtuse & scalene
- Obtuse & isosceles
Hint:
By observing the side lengths and angles of the triangle classify the type of triangle.
A triangle whose all of the angles are acute angles or less than 90°, then it is called an acute-angled triangle or Acute triangle.
Scalene Triangle is a triangle that has all its sides of different lengths.
The correct answer is: Acute & scalene
Here, the side lengths of the triangle are 6.1 , 7.4 and 8.7
As, all three side are different it is a scalene triangle.
Here, the angles of the triangle are 44° ,57° and 79°
As all angles are less than 90° then the triangle is a acute angled triangle.
Therefore, the triangle is Acute & scalene.
Related Questions to study
Mathematics
The measure of the missing angle is
¶A triangle has three angles or sides, and the sum of the angles or sides is always 180 degrees, the missing angle in the triangle's measurement is found by first taking the sum of the other two angles and then subtracting that number from 180.
Exterior Angle of Triangle Properties
The exterior angles of a triangle have three fundamental properties.
• In a triangle, every exterior angle and corresponding interior angle create a linear pair of angles. So, the interior and exterior angles add up to 180°.
• A triangle's exterior angle equals the sum of its two opposite interior angles (remote interior angles). The Exterior Angle Theorem is another name for this.
• The sum of the exterior angle of a triangle is 360°.
¶
Exterior Angle of Triangle Properties
The exterior angles of a triangle have three fundamental properties.
• In a triangle, every exterior angle and corresponding interior angle create a linear pair of angles. So, the interior and exterior angles add up to 180°.
• A triangle's exterior angle equals the sum of its two opposite interior angles (remote interior angles). The Exterior Angle Theorem is another name for this.
• The sum of the exterior angle of a triangle is 360°.
¶
The measure of the missing angle is
MathematicsGrade9
¶A triangle has three angles or sides, and the sum of the angles or sides is always 180 degrees, the missing angle in the triangle's measurement is found by first taking the sum of the other two angles and then subtracting that number from 180.
Exterior Angle of Triangle Properties
The exterior angles of a triangle have three fundamental properties.
• In a triangle, every exterior angle and corresponding interior angle create a linear pair of angles. So, the interior and exterior angles add up to 180°.
• A triangle's exterior angle equals the sum of its two opposite interior angles (remote interior angles). The Exterior Angle Theorem is another name for this.
• The sum of the exterior angle of a triangle is 360°.
¶
Exterior Angle of Triangle Properties
The exterior angles of a triangle have three fundamental properties.
• In a triangle, every exterior angle and corresponding interior angle create a linear pair of angles. So, the interior and exterior angles add up to 180°.
• A triangle's exterior angle equals the sum of its two opposite interior angles (remote interior angles). The Exterior Angle Theorem is another name for this.
• The sum of the exterior angle of a triangle is 360°.
¶
Mathematics
Classify the triangle by its sides
Classify the triangle by its sides
MathematicsGrade9
Mathematics
Classify the triangle by its sides
Classify the triangle by its sides
MathematicsGrade9
Mathematics
Classify the triangle by its sides
Classify the triangle by its sides
MathematicsGrade9
Mathematics
Classify the triangle by its sides
Classify the triangle by its sides
MathematicsGrade9
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