CHILD DEVELOPMENT PEDAGOGY

Detailed explanation-1: -A triangle is classified by its angles and by the number of congruent sides. A triangle that has three acute angels is called an acute triangle. A triangle that has one right angle is called a right triangle.

Detailed explanation-2: -Triangles can be classified either according to their sides or according to their angles. All of each may be of different or the same sizes; any two sides or angles may be of the same size; there may be one distinctive angle.

Detailed explanation-3: -Isosceles triangles have at least two congruent sides and two congruent angles. Right triangles contain an angle whose measure is 90 degrees. All the angles in an acute triangle are less than 90 degrees.

Detailed explanation-4: -Two triangles are congruent if their corresponding sides are equal in length, and their corresponding angles are equal in measure.

Detailed explanation-5: -ASA: If two angles and the included side of one triangle are congruent to the corresponding parts of another triangle, then the triangles are congruent. SAS: If any two angles and the included side are the same in both triangles, then the triangles are congruent.