Practice problems of the triangleA triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. The sum of the measures of the interior angles of a triangle is always 180 degrees. An exterior angle of a triangle is an angle that is a linear pair (and hence supplementary) to an interior angle. The best known area formula is T = a*h /2 where a is the length of the side of the triangle, and h is the height or altitude of the triangle.
Number of problems found: 2188
From which law directly follows the validity of Pythagoras' theorem in the right triangle? ...
- ABS CN
Calculate the absolute value of the complex number -15-29i.
- Center traverse
Does the middle traverse indeed bisect the triangle?
- A triangle 3
A triangle has a base of 5 5/6 feet and a height of 7 2/5 feet. Find the area of the triangle as a mixed number.
- Area of a triangle
Find the area of a triangle with a base of 7 mm and a height of 10 mm.
Can an equilateral triangle have a right angle?
- The angles
The angles in the triangle are in the ratio 12:15:9. Find the angles.
Triangle whose sides are midpoints of sides of triangle ABC has a perimeter 64. How long is the perimeter of the triangle ABC?
- The perimeter
The perimeter of the triangle is 24, and the sides are integers and form an arithmetic sequence. Specify the side sizes of this triangle.
- Equilateral triangle
Find the area of an equilateral triangle with a side of 15 cm.
The ABC right triangle with a right angle at C is side a=29 and height v=17. Calculate the perimeter of the triangle.
- Identical 32703
How many identical triangles do the middle bars divide the triangle ▲?
- Angles - triangle
Find the measure of the angles of the triangle ABC if: the measure of angle A is the measure of angle C and the measure of angle B =½ of the measure of angle C.
- A triangle 8
A triangle has a base of 9.2 feet and a height of 4.8 feet. What is the area of the triangle?
- An isosceles 2
An isosceles triangular frame has a measure of 72 meters on its legs and 18 meters on its base. Find the perimeter of the frame.
- Third interior angle
Find the third interior angle of the triangle ABC where: α = 48°, γ = 65°.
- Scalene triangle
Solve the triangle: A = 50°, b = 13, c = 6
Draw angle |∠ ABC| = 30° and build its axis. What angle is between the axis angle and arm of angle?
- Isosceles triangle
Calculate the perimeter of the isosceles triangle with arm length 73 cm and base length of 48 cm.
- Calculate 4013
In a triangle, one internal angle measures 36 degrees. The second angle is twice the third angle. Calculate unknown angles.
See also our trigonometric triangle calculator. See also more information on Wikipedia.