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Solve for x in the following 45-45-90 triangles

Solve for x in the following 45-45-90 triangles. 10 X x . What is the rule with the 45-45-90 triangle?. 30- 60 -90 Triangle. A 30-60-90 is an equilateral triangle that is bisected!! . Section 5.9. Triangle ABC is equilateral, and is an altitude or height.

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Solve for x in the following 45-45-90 triangles

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  1. Solve for x in the following 45-45-90 triangles 10 X x What is the rule with the 45-45-90 triangle?

  2. 30- 60 -90 Triangle A 30-60-90 is an equilateral triangle that is bisected!!  Section 5.9

  3. Triangle ABC is equilateral, and is an altitude or height. 1. What are m A and m B? _________ 2. What are m ACD and m BCD? _______ 3. What are m ADC and m BDC? _______ 2 cm 2 cm 4. What is the length of ? ___________ 5. How do AC and AD compare?________________________________ bisects 6. Use the Pythagorean Theorem to find the length of the other leg. Simplify the square root.

  4. A 30-60-90 Triangle is also known as a bisected equilateral triangle. 60 30

  5. Triangle ABC is equilateral with side lengths of 3 in. Find the height, . Step 1: Label the degrees of the triangles. Step 2: Label the sides of the triangles. What is the length of ? Label . Step 3: What is the length of ?

  6. Examples: Find the missing sides. 1. 2.

  7. Examples: Find the missing sides. 3. 4.

  8. On your own: 7 60 30

  9. What happens when you are given the longest leg? Find the missing sides in the triangles below. c. b. a.

  10. Extra Practice Problems 30 30 60 60 5 30 10 30 60 60

  11. Examples Continued: a. Find the altitude of an Equilateral triangle with perimeter 18 feet. b. Find the side of an equilateral triangle with altitude 6 cm. SKHmath

  12. Application: An ornamental pin is in the shape of an equilateral triangle. The length of each side is 6 centimeters. Josh will attach the fastener to the back along AB. Will the fastener fit if it is 4 centimeters long?

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