7-1 Areas of Parallelograms and Triangles

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7-1 Areas of Parallelograms and Triangles To find the area of a parallelograms and triangles. In calculating the areas of parallelograms and triangles, students will specify units of measure.

7-1 Quiz The following questions are designed to help you determine how well you understood today’s lesson. Please take time to ask questions to figure out why you missed something so you don’t make the same mistake on your homework!

1. Find the area. The figure is not drawn to scale. 3.9 cm2 11.3 cm2 28.12 cm2 56.24 cm2 Non-Response Grid

2. Find the area. The figure is not drawn to scale. 10.8 cm2 5.4 cm2 21.6 cm2 7.4 cm2 Non-Response Grid

3. Find the area. The figure is not drawn to scale. 144.5 cm2 127 cm2 172 cm2 50 cm2 Non-Response Grid

120 units2 7 units2 30 units2 60 units2 4. Find the area of a polygon with the vertices of (–2, 3), (1, 3), (5, –3), and (–2, –3). 120 units2 7 units2 30 units2 60 units2 Non-Response Grid

about 54 tons about 5 tons about 10,826 tons about 28 tons 5. When designing a building, you must be sure that the building can withstand hurricane-force winds, which have a velocity of 73 mi/h or more. The formula F = 0.004Av2 gives the force F in pounds exerted by a wind blowing against a flat surface. A is the area of the surface in square feet, and v is the wind velocity in miles per hour. How much force is exerted by a wind blowing at 81 mi/h against the side of the building shown? about 54 tons about 5 tons about 10,826 tons about 28 tons Non-Response Grid

Be sure to RATE your understanding of the lesson Assignment 10-1 p.619-621 #8-42even Be sure to RATE your understanding of the lesson 4-3-2-1-0 after you finish it AND give me one complete sentence as to why you rated yourself that way then summarize what the lesson was about in a sentence or two.