Triangle Classification and Congruency

Front

What is a Triangle?

Back

A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry.

Front

Classify a triangle with one angle greater than 90 degrees.

Back

Obtuse Triangle.

Front

What is an Isosceles Triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length.

Front

What is a Scalene Triangle?

Back

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

Front

What is a Right Triangle?

Back

A right triangle is a triangle that has one angle measuring 90 degrees.

Front

Define Congruent Triangles.

Back

Congruent triangles are triangles that are identical in shape and size, meaning their corresponding sides and angles are equal.

Front

What does the symbol '≅' represent in geometry?

Back

The symbol '≅' represents that two figures are congruent.

Front

What is the Triangle Sum Theorem?

Back

The Triangle Sum Theorem states that the sum of the interior angles of a triangle is always 180 degrees.

Front

How do you denote the congruence of triangles?

Back

You denote the congruence of triangles by writing the triangle names in the same order of corresponding vertices, e.g., ∆ABC ≅ ∆DEF.

Front

What is the SSS Congruence Postulate?

Back

The SSS (Side-Side-Side) Congruence Postulate states that if three sides of one triangle are equal to three sides of another triangle, then the triangles are congruent.