# Triangle practice problems

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: 2367

- 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? - The angles 5

The angles of a triangle are in arithmetic progression (AP). The greatest angle is twice the least. Find all the angles. - Know one angle

In a right-angled triangle, the measure of an angle is 40°. Find the measure of other angles of the triangle in degrees.

- Area - simple

Find the area of the triangle. So, the base is 7 2/3 mi. The height is 7 mi. What is the Area? - The sides 7

The sides of the triangle are 5.2, 4.6, and x. If the PERIMETER of the triangle is 11.2 feet, what is the length of the unknown side? (hint: draw a picture) - Two sides 2

Two sides of a triangle are 12 and 15, and the perimeter is 40. Find the other side. - The hypotenuse

The hypotenuse of a right-angled triangle is 20 meters. If the difference between the lengths of the other sides is 4 meters, find the other sides. - For triangle

For triangle XYZ, ∠X = (6g + 14)° and the exterior angle to ∠X measures (5g + 45)°. Find the measure of ∠X and its exterior angle.

- The perimeter 12

The perimeter of an equilateral triangle is 41.46 inches. If the length of each side is (q - 5.7), what is the value of q? - Three angles

The three angles of a triangle are (3x-2)°, (4x+5)°, and (2x-3)°, then find the angles. - Three ratios 2

What is the ratio of bases of two triangles when the ratio of their heights is 3:4 and the ratio of their areas is 4:3? - Perimeter - general

Solve: the perimeter of a triangle is 4x+1.if two of it side are(x+2) and (x-1). Find the third side. - The angles 4

The angles of a triangle are divided into the ratio 126: 213: 312. If the three angles sum to 180°, find the size of each of the three angles.

- Angles sum 180

In triangle ABC, the measure of ∠A is 30°, and the measure of ∠C is 90°. What is the measure of ∠B? - A right

A right triangle has side lengths a=3, b=5, and c=4, as shown below. Use these lengths to find tan x, sin x, and cos x. - Panting

If the base of the triangle is 2 3/4 meters & and the altitude is 3 2/3 meters, then what is the cost of panting on both sides at ₹3 1/2 per sq.m.? - One side 3

One side of a triangular banner is 1 1/2 times longer than the second side and 2cm shorter than the third side. The perimeter of the triangle is 98cm. How long is the shortest side? - The reflection law

AB is a mirror, PQ is the incident ray, and QR is the reflected ray. If angle PQR = 112°, find angle PQA.

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