Curated OER
Similar Triangles - Applied Problems
Pupils differentiate between similar and congruent triangles. For this geometry lesson, students identify the angles of triangles using the similarity theorem. They apply concepts of triangles to the real world.
Curated OER
Worksheet 22
In this math worksheet, students demonstrate that the point ( 1√ 2 , −1 2 , 1 2 ) lies on the unit sphere. They find the equation of the plane tangent to the unit sphere.
Curated OER
Parallel and Perpendicular Lines
In this algebra/geometry worksheet, students investigate the slopes and equations of parallel and perpendicular lines. The two page worksheet contains a combination of eleven multiple choice and free response questions. ...
Curated OER
The Slope of Parallel and Perpendicular Lines
In this Algebra I/Algebra II worksheet, students examine slope to determine if the given lines are parallel or perpendicular. Students determine the equation of lines that are either parallel or perpendicular to the given...
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Cross Products
Find a quick, concise explanation of Cross Products. An example is given and clearly explained.
Paul Dawkins
Paul's Online Notes: Calculus Ii: Vectors
The resource examines vectors and their properties. Topics investigated are vector, vector arithmetic, dot product, and cross product. Class notes, definitions, and examples with detailed solutions are included. The notes are available...
Alabama Learning Exchange
Alex: Exploring Similar Figures Using Proportions
In this activity, students will explore the concept of similarity. Students will first simplify ratios, solve proportions using the cross product property, and use properties of proportions to solve real-world problems. Similar polygons...
Wyzant
Wyzant: Proportion Calculator
Students enter problems into a proportion calculator to see the solutions. The calculator solves proportions using cross product properties.