Area of Triangles and Parallelograms Flashcards
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Questions and Answers

What is the area of triangle LMN?

4 square units

What is the area of parallelogram ABCD? A(3, 6) D(2, 2) B(5, 6) C(5, 1).

13 square units

To solve the problem using the steps, what are the dimensions of the rectangle Michael should draw for parallelogram ABCD?

4 units by 4 units

What is the area of triangle QRS?

<p>7 square units</p> Signup and view all the answers

What is the total area of the two shapes Payton cut out?

<p>21 square units</p> Signup and view all the answers

If line segment AB measures approximately 8.6 units as the base of parallelogram ABCD, what is the approximate corresponding height of the parallelogram?

<p>4.8 units</p> Signup and view all the answers

What is the area of triangle ABC? A(1, 1) B(4, 0) C(3, 5)

<p>7 square units</p> Signup and view all the answers

What is the area of triangle ABC? A(0, 0) B(3, 4) C(3, 2)

<p>3 square units</p> Signup and view all the answers

What is the area of triangle GHJ?

<p>6 square units</p> Signup and view all the answers

If line segment RU is considered the base of parallelogram RSTU, what is the corresponding height of the parallelogram?

<p>5.4 units</p> Signup and view all the answers

Which expression can be used to find the area of triangle RST?

<p>(8 + 4) - 1/2 (10 + 12 + 16)</p> Signup and view all the answers

If line segment BC is considered the base of triangle ABC, what is the corresponding height of the triangle?

<p>1.6 units</p> Signup and view all the answers

How do the areas of the parallelograms compare?

<p>The area of parallelogram ABCD is equal to the area of parallelogram EFGH.</p> Signup and view all the answers

Study Notes

Area of Triangles

  • The area of triangle LMN is 4 square units.
  • Triangle QRS has an area of 7 square units.
  • Triangle ABC with vertices A(1, 1), B(4, 0), and C(3, 5) also has an area of 7 square units.
  • Triangle ABC with vertices A(0, 0), B(3, 4), and C(3, 2) has an area of 3 square units.
  • Triangle GHJ has an area of 6 square units.
  • The expression for finding the area of triangle RST is derived from the formula: (8 - 1/2) (10 + 12 + 16).

Area of Parallelograms

  • The area of parallelogram ABCD, defined by points A(3, 6), D(2, 2), B(5, 6), C(5, 1), is 13 square units.
  • To find the area, a rectangle should be drawn with dimensions of 4 units by 4 units.
  • The base of parallelogram ABCD measures approximately 8.6 units, with a corresponding height of about 4.8 units.
  • For parallelogram RSTU, if line segment RU is the base, the corresponding height is approximately 5.4 units.
  • The areas of parallelogram ABCD and parallelogram EFGH are equal.

Additional Area Considerations

  • Payton combines two shapes to create a house, resulting in a total area of 21 square units.
  • When working with triangles, if line segment BC is considered the base, the corresponding height is 1.6 units.

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Test your understanding of the area formulas for triangles and parallelograms with these flashcards. Each card presents a question related to calculating area, along with possible answer options. Perfect for students studying geometry concepts.

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