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Geometry Warm-Up: Area and Perimeter of Triangles, Trapezoids, and Rhombi

This warm-up activity focuses on finding the area and perimeter of various geometric shapes including triangles, trapezoids, and rhombi. Through practical examples, students will learn to calculate areas and solve for unknown dimensions. Example 1 involves a quadrilateral where AC = 35, BF = 18, and DE = 10. Example 2 requires finding the length US of rhombus RSTU with an area of 64 square inches and RT = 8 inches. Example 3 challenges students to determine the height of trapezoid QRST with an area of 210 square yards.

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Geometry Warm-Up: Area and Perimeter of Triangles, Trapezoids, and Rhombi

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  1. Geometry Warm-up 4/18/12 Find the area and perimeter. Find the area.

  2. 11-2: Areas of Triangles, Trapezoids, & Rhombi Geometry April 18, 2012

  3. Triangle

  4. Trapezoid

  5. Rhombus

  6. Example 1: Find the area of quadrilateral ABCD if AC = 35, BF = 18, and DE = 10.

  7. Example 2: Rhombus RSTU has an area of 64 square inches. Find US if RT = 8 inches.

  8. Example 3: Trapezoid QRST has an area of 210 square yards. Find the height of QRST.

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