Sovi.AI - AI Math Tutor

Scan to solve math questions

QUESTION IMAGE

figure abcd is a rhombus. what is the value of (x)? - 13 - 14 - 26 - 28

Question

figure abcd is a rhombus.
what is the value of (x)?

  • 13
  • 14
  • 26
  • 28

Explanation:

Response

<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"step_cot",
"multiple_choice_formatter",
"explain_then_answer",
"tutor",
"mastery_adaptive_brevity"
],
"needs_drawing": false,
"concepts_used": [
"Rhombus Properties",
"Solving Linear Equations"
],
"new_concepts": [],
"current_concepts": [
"Rhombus Properties",
"Solving Linear Equations"
]
}
</pre_analysis>

<reasoning>

Identify the geometric relationship

Using the Rhombus Properties knowledge point
In a rhombus, consecutive angles are supplementary because opposite sides are parallel.
\[
m\angle A + m\angle D = 180^\circ
\]

Set up the equation

Using the Rhombus Properties knowledge point
Substitute the given expressions for the angles:
\[
(5x + 25) + (7x - 1) = 180
\]

Solve for x

Using the Solving Linear Equations knowledge point
\[

$$\begin{aligned} 12x + 24 &= 180\\ 12x &= 156\\ x &= 13 \end{aligned}$$

\]
</reasoning>

<answer>
<mcq-correct>(A) 13</mcq-correct>
<mcq-option>(B) 14</mcq-option>
<mcq-option>(C) 26</mcq-option>
<mcq-option>(D) 28</mcq-option>
</answer>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Geometry",
"Rhombus Properties"
]
}
</post_analysis>

Answer:

<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"step_cot",
"multiple_choice_formatter",
"explain_then_answer",
"tutor",
"mastery_adaptive_brevity"
],
"needs_drawing": false,
"concepts_used": [
"Rhombus Properties",
"Solving Linear Equations"
],
"new_concepts": [],
"current_concepts": [
"Rhombus Properties",
"Solving Linear Equations"
]
}
</pre_analysis>

<reasoning>

Identify the geometric relationship

Using the Rhombus Properties knowledge point
In a rhombus, consecutive angles are supplementary because opposite sides are parallel.
\[
m\angle A + m\angle D = 180^\circ
\]

Set up the equation

Using the Rhombus Properties knowledge point
Substitute the given expressions for the angles:
\[
(5x + 25) + (7x - 1) = 180
\]

Solve for x

Using the Solving Linear Equations knowledge point
\[

$$\begin{aligned} 12x + 24 &= 180\\ 12x &= 156\\ x &= 13 \end{aligned}$$

\]
</reasoning>

<answer>
<mcq-correct>(A) 13</mcq-correct>
<mcq-option>(B) 14</mcq-option>
<mcq-option>(C) 26</mcq-option>
<mcq-option>(D) 28</mcq-option>
</answer>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Geometry",
"Rhombus Properties"
]
}
</post_analysis>