Triangles Practice

Front

What is a triangle?

Back

A triangle is a polygon with three edges and three vertices.

Front

What are the types of triangles based on angles?

Back

1. Acute triangle: All angles are less than 90 degrees. 2. Right triangle: One angle is exactly 90 degrees. 3. Obtuse triangle: One angle is greater than 90 degrees.

Front

What are the types of triangles based on sides?

Back

1. Equilateral triangle: All sides are equal. 2. Isosceles triangle: Two sides are equal. 3. Scalene triangle: All sides are different.

Front

How do you find the perimeter of a triangle?

Back

The perimeter of a triangle is the sum of the lengths of its sides: P = a + b + c.

Front

What is the area of a triangle?

Back

The area of a triangle can be calculated using the formula: Area = 1/2 * base * height.

Front

What is the Pythagorean theorem?

Back

In a right triangle, the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two sides (a and b): a² + b² = c².

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle in which all three sides are of equal length and all three angles are equal (each measuring 60 degrees).

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle in which all three sides are of different lengths and all three angles are different.

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length and the angles opposite those sides are equal.

Front

How do you classify triangles based on their angles and sides?

Back

Triangles can be classified as: 1. Acute scalene 2. Acute isosceles 3. Right scalene 4. Right isosceles 5. Obtuse scalene 6. Obtuse isosceles 7. Equilateral (also equiangular) triangle.