Area of Triangles and Trapezoids

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Area of Triangles and Trapezoids. #34. FYI. You can divide any parallelogram into two congruent triangles. So the area of each triangle is half the area of the parallelogram. VOCABULARY. Example 1: Finding the Area of a Triangle. Find the area of the triangle. FYI. Reading Math.
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Area of Triangles and Trapezoids#34FYIYou can divide any parallelogram into two congruent triangles. So the area of each triangle is half the area of the parallelogram.VOCABULARYExample 1: Finding the Area of a TriangleFind the area of the triangle.FYIReading MathAn altitude of a triangle is a perpendicular segment from one vertex to the line containing the opposite side. The length of the altitude is the height.Example 2Find the area of the triangle.4 cm 11 cm Example 3The diagram shows the floor plan for a triangulardining area. What is the area of the floor?6.2 m34.8 mExample 4: ApplicationThe diagram shows the section of a forest being studied. What is the area of the section?Example 5Mitch uses the piece of wood shown as part of a skateboard ramp. Its area is 0.8 m .2What is the height of the piece of wood?.2 m Example 6Mitch wants his skateboard ramp to be at least 750 cm tall. Should he use this piece of wood to build the ramp? Explain.?.VOCABULARYExample 7: Finding the Area of a TrapezoidFind the area of the trapezoid.Example 8Lisa wants to cut a hole in the shape of a trapezoid out of a piece of wood. The figure shows her plans, and each square of the grid represents 1 ft . What is the area of the remaining wood after she cuts out the hole?2Example 9The figure shows a vegetable garden that is planted with squash and carrots. To the nearest percent, how much of the vegetable garden is for squash?
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