SAT Math · Topic 4.2

Lines, Angles, and Triangles Practice

Part of Geometry and Trigonometry.

Practice questions

111

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Sample questions

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Sample 1difficulty 2/5
$112°$
- A
  $68°$
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- B
  $88°$
- C
  $22°$
- D
  $78°$
Why
$180°$
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Sample 2difficulty 2/5
$What is the sum of the interior angles of a pentagon?$
- A
  $720°$
- B
  $540°$
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- C
  $360°$
- D
  $900°$
Why
$180(5-2)=540°$
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Sample 3difficulty 2/5
$70°$
- A
  $70°$
- B
  $110°$
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- C
  $20°$
- D
  $90°$
Why
$180-70=110°$
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Sample 4difficulty 2/5
$5x$
- A
  $10$
- B
  $18$
- C
  $20$
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- D
  $9$
Why
$180°$
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Sample 5difficulty 2/5
$A triangle has base 10 and height 6. What is its area?$
- A
  $16$
- B
  $30π$
- C
  $30$
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- D
  $60$
Why
$= \\frac{1}{2} \\cdot \\text{base} \\cdot \\text{height} = \\frac{1}{2}(10)(6) = 30$
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