Congruent Triangles

Front

What is a congruent triangle?

Back

A triangle that is identical in shape and size to another triangle, meaning all corresponding sides and angles are equal.

Front

What are the three types of triangles based on their sides?

Back

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

Front

What are the three types of triangles based on their angles?

Back

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

Front

What is the Third Angles Theorem?

Back

If two angles of one triangle are equal to two angles of another triangle, then the third angles are also equal.

Front

How do you classify a triangle with one angle greater than 90°?

Back

It is classified as an obtuse triangle.

Front

If two sides of a triangle are equal, what type of triangle is it?

Back

It is an isosceles triangle.

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180°.

Front

If one angle of a triangle is 90°, what type of triangle is it?

Back

It is classified as a right triangle.

Front

How can you determine if two triangles are congruent?

Back

Two triangles are congruent if they have the same size and shape, which can be proven using criteria such as SSS, SAS, ASA, AAS, or HL.

Front

What does SSS stand for in triangle congruence?

Back

SSS stands for Side-Side-Side, which means if three sides of one triangle are equal to three sides of another triangle, the triangles are congruent.