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Questions and Answers
What is the formula to calculate the perimeter of a rectangle?
What is the formula to calculate the perimeter of a rectangle?
- P = l × w
- P = 2lw
- P = l + w
- P = 2(l + w) (correct)
What is the area of a rectangle with a length of 5 units and a width of 3 units?
What is the area of a rectangle with a length of 5 units and a width of 3 units?
- 10 square units
- 20 square units
- 15 square units (correct)
- 25 square units
What is the name of the triangle that can be formed by dividing a rectangle into two parts by drawing a diagonal?
What is the name of the triangle that can be formed by dividing a rectangle into two parts by drawing a diagonal?
- Scalene triangle (correct)
- Isosceles triangle
- Right triangle
- Equilateral triangle
What are the angles of the scalene triangles formed by dividing a rectangle into two parts by drawing a diagonal?
What are the angles of the scalene triangles formed by dividing a rectangle into two parts by drawing a diagonal?
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What is the result of the diagonal of a rectangle bisecting the rectangle into two parts?
What is the result of the diagonal of a rectangle bisecting the rectangle into two parts?
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Study Notes
Perimeter of a Rectangle
- The perimeter of a rectangle is the distance around the outside of the rectangle.
- The formula to calculate the perimeter of a rectangle is: P = 2(l + w)
- Where P is the perimeter, l is the length, and w is the width.
Area of a Rectangle
- The area of a rectangle is the amount of space inside the rectangle.
- The formula to calculate the area of a rectangle is: A = l × w
- Where A is the area, l is the length, and w is the width.
Scalene Triangles and Rectangles
- A scalene triangle is a triangle with all sides of different lengths.
- A rectangle can be divided into two scalene triangles by drawing a diagonal.
- The diagonal of a rectangle bisects the rectangle into two congruent scalene triangles.
- The angles of the scalene triangles are:
- Two right angles (90°) at the vertices of the rectangle
- Two unequal acute angles at the vertices where the diagonal meets the sides
Perimeter of a Rectangle
- The perimeter of a rectangle is the distance around the outside of the rectangle.
- Formula to calculate the perimeter: P = 2(l + w), where P is the perimeter, l is the length, and w is the width.
Area of a Rectangle
- The area of a rectangle is the amount of space inside the rectangle.
- Formula to calculate the area: A = l × w, where A is the area, l is the length, and w is the width.
Scalene Triangles and Rectangles
- A scalene triangle is a triangle with all sides of different lengths.
- A rectangle can be divided into two scalene triangles by drawing a diagonal.
- The diagonal of a rectangle bisects the rectangle into two congruent scalene triangles.
- Angles of the scalene triangles:
- Two right angles (90°) at the vertices of the rectangle
- Two unequal acute angles at the vertices where the diagonal meets the sides
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