Master right triangle concepts with interactive practice problems. Learn to identify 90-degree angles, calculate missing angles, and solve real-world applications.
A right triangle is a triangle that has one right angle, meaning an angle of 90 degrees. Based on the fact that the sum of angles in any triangle is 180 degrees, we can conclude that the sum of the two remaining angles in a right triangle is 90 degrees. This means that both angles must be acute (less than 90 degrees).
Is the triangle in the drawing an acute-angled triangle?
What kid of triangle is given in the drawing?
The measure of angle C is 90°, therefore it is a right angle.
If one of the angles of the triangle is right, it is a right triangle.
Answer:
Right triangle
What kind of triangle is given in the drawing?
As all the angles of a triangle are less than 90° and the sum of the angles of a triangle equals 180°:
The triangle is isosceles.
Answer:
Isosceles triangle
What kid of triangle is the following
Given that in an obtuse triangle it is enough for one of the angles to be greater than 90°, and in the given triangle we have an angle C greater than 90°,
Furthermore, the sum of the angles of the given triangle is 180 degrees so it is indeed a triangle:
The triangle is obtuse.
Answer:
Obtuse Triangle
What kind of triangle is given in the drawing?
Given that sides AB and AC are both equal to 9, which means that the legs of the triangle are equal and the base BC is equal to 5,
Therefore, the triangle is isosceles.
Answer:
Isosceles triangle
Which kind of triangle is given in the drawing?
As we know that sides AB, BC, and CA are all equal to 6,
All are equal to each other and, therefore, the triangle is equilateral.
Answer:
Equilateral triangle