Geometry: An Interactive Journey to Mastery

Are the two triangles in Figure 10.12 similar? If so, what is the scale factor? D௘ͽ 6KRZWKDWWKHUHLVQR$$$$SULQFLSOH for ...

Lesson 10: Practical Applications of Similarity A line is drawn from the midpoint of the base of an isosceles triangle WRLWVD ...

For Figure 10.18, prove that ‘#‘ACE BCD. AD E B C Figure 10.18 ...

Lesson 11: Making Use of Linear Equations Making Use of Linear Equations Lesson 11 Topics x The equation of a line. x The slop ...

Example 1 Sketch graphs of the following lines. D௘ͽ yí íͼ௘x௘ͽ E௘ͽ y = 20x + 1. F௘ͽ x = 3. Solution D௘ͽ yí í ...

Lesson 11: Making Use of Linear Equations Solution Such a line has slope ^5624  16 and, therefore, has equation yx 64.^16 T ...

Solution The segment PQ has slope^0741  ^73 , so the perpendicular bisector to PQ has slope^37. It also passes through the mi ...

Lesson 11: Making Use of Linear Equations Find the slopes of each of the following. D௘ͽ $OLQHSDUDOOHOWRWKHOLQHWKURXJKWK ...

Find an equation for each of the following lines. D௘ͽ $OLQHWKURXJKͼ௘௘ͽDQGͼ௘௘ͽ E௘ͽ $OLQHWKURXJKͼ௘í௘ͽDQG ...

Lesson 11: Making Use of Linear Equations :DUQLQJ7KLVLVDOHQJWK\H[HUFLVH /HWA ͼ௘௘ͽB ͼ௘௘ͽC ͼ௘í௘ͽ P ...

Equidistance—A Focus on Distance Lesson 12 Topics x Equidistance between points. x Equidistance between lines. x Circumcircle ...

Lesson 12: Equidistance—A Focus on Distance x The set of points equidistant from a pair of intersecting lines is precisely the ...

Example 2 Figure 12.1 is a map of two intersecting paths in a park. At point A stands a statue, and at point B is a fountain. Ma ...

Lesson 12: Equidistance—A Focus on Distance Which of the following points are equidistant from A ͼ௘௘ͽDQGB ͼ௘௘ͽ" D ...

)LOOLQWKHIROORZLQJEODQNVͼ௘6HHFigure 12.5௘ͽ D௘ͽ ,IP is on the angle bisector of ‘RMN, then P is equidistant from lines ...

Lesson 12: Equidistance—A Focus on Distance A treasure is buried at a location equidistant from points R and S on the ground pr ...

A Return to Parallelism Lesson 13 Topics x Midpoint segments in triangles. x Midpoint quadrilaterals within quadrilaterals. x ...

Lesson 13: A Return to Parallelism x The median of a trapezoid is parallel to the two parallel sides of the trapezoid and has l ...

We do not know if PQ is parallel to the pair of lines. Imagine drawing a line through P that is in fact parallel to the pair of ...

Lesson 13: A Return to Parallelism M, N, and O are midpoints of the sides of +ABC. ͼ௘6HHFigure 13.10௘ͽ D௘ͽ ,IBC = 20, then ...