# Practice problems of the triangle - page 2 of 109

A 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: 2167

- Catheti

The hypotenuse of a right triangle is 41, and the sum of legs is 49. Calculate the length of its legs. - Angle

Determine the size of the smallest internal angle of a right triangle which angles forming the successive members of the arithmetic sequence. - 3-bracket 2

Maybe the smallest angle in the triangle is greater than 70°? - 3-bracket

Maybe the largest angle in the triangle is less than 20°? - Triangle 36091

Decide if the triangle is right (sides 5,11,7, cm) - Isosceles triangle

Calculate the area of an isosceles triangle, the base measuring 16 cm and the arms 10 cm. - Possible lengths

Find the possible lengths for the third side of a triangle with sides 20 and 18. - An equilateral triangle

The perimeter of an equilateral triangle is 33cm. How long is each side? - Is right triangle

Decide if the triangle XYZ is rectangular: x = 4 m, y = 6 m, z = 4 m - Area of RT 2

Calculate the area of a right triangle whose legs have a length of 6.2 cm and 9.8 cm. - Right triangle

Right triangle ABC with side a = 19 and the area S = 95. Calculate the length of the remaining sides. - Right triangle

Right triangle legs have lengths 630 mm and 411 dm. Calculate the area of this triangle. - Circumference 47983

What is the area of an equilateral triangle with a circumference of 63 cm? - Greatest angle

Calculate the greatest triangle angle with sides 197, 208, 299. - Angles

In the triangle ABC, the magnitudes of the angles α, β γ are in the ratio 0.4:1:0.9. Find their magnitudes. - One leg

One leg of a right triangle is 1 foot longer than the other leg. The hypotenuse is 5 feet. Find the lengths of the three sides of the triangle. - Height of right RT

The right triangle ABC has a hypotenuse c 9 cm long and a part of the hypotenuse cb = 3 cm. How long is the height of this right triangle? - Complementary angles 2

Two complementary angles are (x+4) and (2x - 7). Find the value of x. - Angles in triangle

Calculate the alpha angle in the triangle if the beta is 61 degrees and 98 gamma degrees. - QuizQ

An isosceles triangle has two sides of length 7 km and 39 km. How long is a third side?

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