SIMILAR TRIANGLES - WARM UP ACTIVITY

Front

What are similar triangles?

Back

Triangles that have the same shape but may have different sizes. Their corresponding angles are equal, and their corresponding sides are in proportion.

Front

What is the Angle-Angle (AA) Criterion for Similarity?

Back

If two angles of one triangle are equal to two angles of another triangle, then the triangles are similar.

Front

What is the Side-Side-Side (SSS) Criterion for Similarity?

Back

If the corresponding sides of two triangles are in proportion, then the triangles are similar.

Front

What is the Side-Angle-Side (SAS) Criterion for Similarity?

Back

If one angle of a triangle is equal to one angle of another triangle and the sides including these angles are in proportion, then the triangles are similar.

Front

How do you determine if two triangles are similar using their angles?

Back

Check if all corresponding angles are equal. If they are, the triangles are similar.

Front

How do you determine if two triangles are similar using their sides?

Back

Calculate the ratios of the lengths of corresponding sides. If the ratios are equal, the triangles are similar.

Front

What is the Triangle Proportionality Theorem?

Back

If a line is drawn parallel to one side of a triangle, it divides the other two sides proportionally.

Front

What is the converse of the Triangle Proportionality Theorem?

Back

If a line divides two sides of a triangle proportionally, then it is parallel to the third side.

Front

What is a scale factor in similar triangles?

Back

The ratio of the lengths of corresponding sides of two similar triangles.

Front

If triangle ABC is similar to triangle DEF, and the lengths of AB and DE are 4 cm and 8 cm respectively, what is the scale factor?

Back

The scale factor is 1:2.