IM Geometry Unit 1 Review

Front

What is the definition of reflection in geometry?

Back

Reflection is a transformation that flips a figure over a line, creating a mirror image.

Front

What does it mean for two lines to be parallel?

Back

Two lines are parallel if they are in the same plane and do not intersect, no matter how far they are extended.

Front

What is rotation symmetry?

Back

Rotation symmetry is when a figure can be rotated around a central point and still look the same at certain angles.

Front

What is the angle sum property of a triangle?

Back

The angle sum property states that the sum of the interior angles of a triangle is always 180 degrees.

Front

What is a perpendicular bisector?

Back

A perpendicular bisector is a line that divides a segment into two equal parts at a 90-degree angle.

Front

What is the relationship between corresponding angles when two parallel lines are cut by a transversal?

Back

Corresponding angles are equal when two parallel lines are cut by a transversal.

Front

What is the definition of vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect; they are always equal.

Front

How do you find the value of x in an equation involving angles?

Back

Set up an equation based on the properties of angles (like angle sum or equal angles) and solve for x.

Front

What is the definition of supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What is the definition of complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.