Geometry Sem 1 Recap

Front

What are parallel lines?

Back

Lines in a plane that never meet and are always the same distance apart.

Front

What is the formula to find the slope of a line?

Back

Slope = rise/run.

Front

How do you find the midpoint between two points (x1, y1) and (x2, y2)?

Back

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

Front

What is the substitution property of equality?

Back

If x = y, then x may be replaced by y in any equation or expression.

Front

What does it mean for points to be collinear?

Back

Points that lie on the same straight line.

Front

What is the definition of intersecting lines?

Back

Lines that cross each other at one point.

Front

What are perpendicular lines?

Back

Lines that intersect at a right angle (90 degrees).

Front

How do you determine if two lines are parallel using their slopes?

Back

If two lines have the same slope, they are parallel.

Front

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

Back

Distance = √((x2 - x1)² + (y2 - y1)²).

Front

What is the definition of a line segment?

Back

A part of a line that has two endpoints.