Geometry A Unit 3

Front

What is a 90° Clockwise Rotation?

Back

A transformation that turns a figure 90 degrees in the clockwise direction around a fixed point.

Front

What is the solution for x in the equation 2x + 3 = -5?

Back

x = -4.

Front

How do you find the missing angle in a triangle if two angles are known?

Back

Use the fact that the sum of angles in a triangle is 180°. Subtract the sum of the known angles from 180°.

Front

What is Rotation in geometry?

Back

A transformation that turns a figure around a fixed point.

Front

What does SAS stand for in triangle congruence?

Back

Side-Angle-Side; a theorem stating that if two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, the triangles are congruent.

Front

What is the definition of a Transformation in geometry?

Back

A change in the position, size, or shape of a figure.

Front

What is the difference between Translation and Rotation?

Back

Translation moves a figure without changing its orientation, while Rotation turns a figure around a point.

Front

What is the formula to calculate the sum of interior angles of a polygon?

Back

(n - 2) × 180°, where n is the number of sides.

Front

What is the definition of Congruent triangles?

Back

Triangles that are identical in shape and size, meaning all corresponding sides and angles are equal.

Front

What is the purpose of the AAS theorem in triangle congruence?

Back

Angle-Angle-Side; it states that if two angles and a non-included side of one triangle are equal to two angles and the corresponding non-included side of another triangle, the triangles are congruent.