By CK-12 Foundation
CK-12's simple Geometry FlexBook, Volumes 1 via 2, is designed to offer scholars with geometric ideas in a extra graphics-oriented direction. quantity 2 contains 6 chapters: Similarity, correct Triangle Trigonometry, Circles, Perimeter and quarter, floor zone and quantity, and inflexible changes.
Read Online or Download CK-12 Basic Geometry, Volume 2 of 2 PDF
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Extra resources for CK-12 Basic Geometry, Volume 2 of 2
_____ If had an altitude, , what would be the length of altitude ? Find the perimeter of and . Find the ratio of the perimeters. Use the diagram to the right for questions 13-18. _____ Why are the two triangles similar? Find . Is true? Is true? Determine if the following triangles are similar. If so, write the similarity theorem and statement. Algebra Connection Find the value of the missing variable(s) that makes the two triangles similar. At a certain time of day, a building casts a 25 ft shadow.
Corollary 7-1: If and are nonzero and , then . Switch and . Corollary 7-2: If and are nonzero and , then . Switch and . Corollary 7-3: If and are nonzero and , then . Flip each ratio upside down. In each corollary, you will still end up with after cross-multiplying. Example 9: Suppose we have the proportion . Write three true proportions that follow. Solution: First of all, we know this is a true proportion because you would multiply by to get . Using the three corollaries: Corollary 7-4: If and are nonzero and , then .
Determine if the following lengths make a right triangle. 7, 24, 25 15, 20, 25 20, 25, 30 Determine if the following triangles are acute, right or obtuse. 7, 8, 9 14, 48, 50 5, 12, 15 13, 84, 85 20, 20, 24 35, 40, 51 39, 80, 89 20, 21, 38 48, 55, 76 Graph each set of points and determine if is acute, right, or obtuse, using the distance formula. Show that #18 is a right triangle by using the slopes of the sides of the triangle. The figure to the right is a rectangular prism. All sides (or faces) are either squares (the front and back) or rectangles (the four around the middle).
CK-12 Basic Geometry, Volume 2 of 2 by CK-12 Foundation