Investigating Similar Triangles and Understanding Proportionality: Lesson Plan Page 1 of 7 [email protected] 03/12/11 Purpose of the lesson: This lesson is designed to help students to discover the properties of similar triangles.
7-3: Triangle Similarity QUIZ 1: 7-1 & 7-2 I can use the triangle similarity theorems to determine if two triangles are similar. I can use proportions in similar triangles to solve for missing sides. I can set up and solve problems using properties of similar triangles. I can prove triangles are congruent in a two-column proof. Geometry SOL Review (With video links): To open a link, Right click on the URL and choose Open Hyperlink or Type or Paste the address directly into your browser. REVIEW FOR CONGRUENT TRIANGLES TEST Level A Honor Proofs 1. 2. 3. Level B Honor Proofs ... If the base angles of a triangle are congruent, the triangle is isosceles. ...
b) Are these triangles congruent, similar or neither? Explain. c) Find the ratio of the perimeter of to . d) Find the ratio of the area of to 10. Using the diagram (to the right) of the two similar triangles: a. What is the relationship between the sides of to the sides of b. Find the perimeters of both triangles. Ratio and Proportion Review Video. Powered by Create your own unique website with customizable templates. Get Started ... Geometry Final Exam Review Worksheet (1) Find the area of an equilateral triangle if each side is 8. (2) (3) Find the length of the arc of a sector of 54 ° in a circle if the radius is 10.
Part 4-c: Similar Triangles Similar Triangles Triangles are similar when all corresponding angles are congruent and when the corresponding sides are proportional—that is, they can be written as the exact same ratio. Remember, every triangle has three sides, so to determine which sides correspond to one another it helps to make a table. 5. The ratio of the lengths of the sides of similar figures is called the scale factor for the two figures. 6. If one angle in a triangle is congruent to an angle in another triangle, then the two triangles are similar. 7. If a line is parallel to one side of a triangle and intersects the other two sides in two distinct points, then the line