Perpendicular Lines Study Guide
- Definition: Two lines are perpendicular if they intersect at a 90-degree angle.
- Identifying Perpendicular Lines: Use a protractor to measure the angles where the lines intersect.
- Symbol: The symbol for perpendicular lines is ⊥.
- Parallel and Perpendicular Lines: Perpendicular lines intersect and form right angles, unlike parallel lines.
- Applications: Perpendicular lines are used in construction, architecture, and engineering.
- Perpendicular Bisector: A line that is perpendicular to another line segment and divides it into two equal parts.
◂Math Worksheets and Study Guides Fourth Grade. Percents
Study Guide
Percents 
Worksheet/Answer key
Percents Worksheet/Answer key
Percents Worksheet/Answer key
Percents
Worksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyThe resources above cover the following skills:
Algebra (NCTM)
Use mathematical models to represent and understand quantitative relationships.
Model problem situations with objects and use representations such as graphs, tables, and equations to draw conclusions.