Geometry A Unit 4

Front

What does SSS stand for in triangle similarity?

Back

SSS stands for Side-Side-Side, a criterion for triangle similarity where all three sides of one triangle are proportional to the three sides of another triangle.

Front

What is the AA criterion for triangle similarity?

Back

AA stands for Angle-Angle, a criterion for triangle similarity where two angles of one triangle are equal to two angles of another triangle.

Front

What is the ASA criterion for triangle similarity?

Back

ASA stands for Angle-Side-Angle, a criterion for triangle similarity where two angles and the included side of one triangle are equal to two angles and the included side of another triangle.

Front

What is the definition of a scale factor in geometry?

Back

A scale factor is a number that scales, or multiplies, some quantity. In geometry, it is the ratio of the lengths of two corresponding sides of similar figures.

Front

If a triangle has a scale factor of 2, what does that mean?

Back

It means that every side of the triangle is twice as long as the corresponding side of a similar triangle.

Front

How many lines of symmetry does a butterfly have?

Back

A butterfly has 1 line of symmetry, which divides it into two mirror-image halves.

Front

What is the definition of congruence in geometry?

Back

Congruence in geometry means that two figures have the same shape and size, and can be made to coincide by rigid transformations.

Front

What does it mean for triangles to be similar?

Back

Triangles are similar if their corresponding angles are equal and their corresponding sides are in proportion.

Front

If two triangles are similar and one side of the first triangle is 8 cm, what is the corresponding side in the second triangle if the scale factor is 2?

Back

The corresponding side in the second triangle would be 16 cm.

Front

What is the formula for finding the area of a triangle?

Back

The area of a triangle is given by the formula: Area = 1/2 * base * height.