
Triangles & Similarity
Identifying Scale Factors
Use corresponding side lengths to find the scale factor between two figures.
Open topic →
Scale Factor Word Problems
Find a scale factor, original measurement, or scaled measurement from a real-world situation.
Open topic →
Valid Triangles
Decide whether given side lengths or angles can form a valid triangle.
Open topic →
Triangle Interior Angles
Use the triangle angle sum to find missing angle measures.
Open topic →
Exterior Angle Theorem
Use the Exterior Angle Theorem to find missing angle measures.
Open topic →
Missing Treasure (Drawing Triangles)
Use three landmark clues to construct a triangle and locate the treasure.
Open topic →
Similar Triangles
Use the Angle-Angle Similarity Theorem to find missing sides and angles.
Open topic →