MA.6.GR.2.1 · Geometric Reasoning
Students derive the formula for the area of a right triangle by seeing it as half of a rectangle, then apply the formula A = ½bh to find the area of triangles. They learn to identify the base and the height (including heights drawn outside the triangle) and compute areas in both math and real-world problems.
The FAST tests this with equation editor items computing a triangle area from a labeled diagram and multiple choice items, including ones where students must pick the correct base-height pair.
These come straight from Algebro's question bank, easiest first. Answer one, check it, then move to the next.
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Select every answer that applies, then check.
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Correct answer: A, C (highlighted above)
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Correct answer: 1/2 × 7.5 × 6, 22.5
Pick one match in each row, then check.
| A.24 cm² | B.15 cm² | C.28 cm² | D.18 cm² | |
|---|---|---|---|---|
| Base 6 cm, height 5 cm | ||||
| Base 8 cm, height 7 cm | ||||
| Base 4 cm, height 9 cm | ||||
| Base 12 cm, height 4 cm |
Showcase extra: the real practice and quiz players do not have this button.
Correct answer: Row 1: B, Row 2: C, Row 3: D, Row 4: A (green boxes above)
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Enter the number only. Do not include units like $, %, or ft²
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Correct answer:
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Correct answer: D. 42 ft²
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