Learning Goal
Part of: Solve real-world and mathematical problems involving area, surface area, and volume — 1 of 4 cluster items
Find the area of right triangles, other triangles, special quadrilaterals, and polygons
**6.G.A.1**: Find the area of right triangles, other triangles, special quadrilaterals, and polygons by composing into rectangles or decomposing into triangles and other shapes; apply these techniques in the context of solving real-world and mathematical problems.
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6.G.A.1: Find the area of right triangles, other triangles, special quadrilaterals, and polygons by composing into rectangles or decomposing into triangles and other shapes; apply these techniques in the context of solving real-world and mathematical problems.
What you'll learn
- Apply the formula A = (1/2)bh to find the area of any triangle, including right triangles, obtuse triangles, and cases where the height is outside the base
- Apply area formulas for special quadrilaterals: parallelogram (A = bh), trapezoid (A = (1/2)(b₁ + b₂)h), and rhombus/kite (optional extension)
- Find the area of composite polygons by decomposing them into triangles and rectangles, or by composing them into larger shapes and subtracting
Slides
Interactive presentations perfect for visual learners • Interactive presentation
Slide Video
Watch narrated slides play like a video lesson • Narrated slide playback
Exercises
Practice problems to build fluency and understanding • 1 exercises