6th Grade Replacement Lesson - SVUSD

Lesson 6 - Triangles

Triangles

Vocabulary:

angle	side	vertex	perimeter
obtuse triangle	scalene	right triangle	isoceles
equilateral	hypotenuse	Pythagorean Theorem	acute triangle

 

Web Resources:

The Math Forum: Triangle Formulas
Investigate the geometric definitions of triangles, focusing upon equilateral, isosceles, right, and scalene with detailed drawings and appropriate formulas for each. This site has links to more information on triangles.

Educational Java Programs: The Pythagorean Theorem
Can you figure out the Pythagorean Theorem on your own? Students who accept this challenge are given a few tips to help them arrive at a solution. Then, they can compare their results with other students who have successfully found the solution. An excellent critical thinking, hands-on activity for mathematicians that can handle a challenge.

math.com - Triangles
A triangle is the simplest polygon, having three sides and three angles. The sum of the three angles of a triangle is equal to 180 degrees.

Calculating the Area of a Triangle:
The area of a triangle can be found by multiplying one-half times the base times the height.
If a triangle has a base of length 6 inches and a height of 4 inches, its area is .5 x 6 x 4=12 square inches

Video Resources:

  The Pythagorean Theorem

  Solving for Missing Angles

  The Names & Types of Triangles

 

Drag the labels from the bottom to the correct slots.

 

Find the missing sides in the following right triangles:

 

Match the items. a b c d 1. a=3 b=4 c=?     a. 13 a b c d 2. a=5 b=12 c=?     b. 7 a b c d 3. a=6 b=? c=10     c. 5 a b c d 4. a=? b=24 c=25     d. 8

Find the missing number in the the following triangles:

 

 

Drag the labels from the bottom to the correct slots.

 

 

 

 

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