Geometry Q1 Review

Front

What is the midpoint formula for two points (x1, y1) and (x2, y2)?

Back

Midpoint = ((x1 + x2)/2, (y1 + y2)/2)

Front

How do you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1)

Front

What is the slope of a line parallel to a line with slope m = 3/4?

Back

The slope of a parallel line is also 3/4.

Front

What is the slope of a line perpendicular to a line with slope m = 3/4?

Back

The slope of a perpendicular line is -4/3.

Front

What does it mean for two lines to be parallel?

Back

Two lines are parallel if they have the same slope and never intersect.

Front

What does it mean for two lines to be perpendicular?

Back

Two lines are perpendicular if the product of their slopes is -1.

Front

What is the definition of distance between two points (x1, y1) and (x2, y2)?

Back

Distance = √((x2 - x1)² + (y2 - y1)²)

Front

How many lines of symmetry does a shape have if it is symmetrical about one line?

Back

It has 1 line of symmetry.

Front

What is rotational symmetry?

Back

A shape has rotational symmetry if it can be rotated around a center point and still look the same.

Front

What is the degree of rotation for a shape with 180-degree rotational symmetry?

Back

The shape looks the same when rotated 180 degrees.