these two polygons are similar. x = ?
these two polygons are similar. x = ?
Answer
Explanation:
Step1: Set up proportion
Since the polygons are similar, the ratios of corresponding - sides are equal. We can set up the proportion $\frac{x}{4}=\frac{15}{3}$.
Step2: Cross - multiply
Cross - multiplying gives us $3x = 4\times15$.
Step3: Simplify right - hand side
$4\times15 = 60$, so $3x=60$.
Step4: Solve for x
Dividing both sides by 3, we get $x=\frac{60}{3}=20$.
Answer:
20