Examples with solutions for Parts of a Triangle: Median in a right-angled triangle

Exercise #1

Given the right triangle

Given the size of the string in the triangle is 10.

Find the size of the median to the hypotenuse.

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Video Solution

Step-by-Step Solution

To find the length of the median to the hypotenuse in a right triangle, we will follow these steps:

  • Step 1: Identify the length of the hypotenuse, cc, which is given as 10 units.
  • Step 2: Use the formula for the median to the hypotenuse: m=c2m = \frac{c}{2}, where cc is the hypotenuse.
  • Step 3: Substitute the value of cc into the formula to find mm.

Now, let's perform the calculations:
Since the hypotenuse c=10c = 10, substituting 1010 into the formula gives:

m=102=5 m = \frac{10}{2} = 5

Thus, the length of the median to the hypotenuse is 55 units.

Answer

5

Exercise #2

Imagine a right triangle.

The length from the median to the hypotenuse is 6.

What is the length of the hypotenuse?

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Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the key formula for medians in right triangles.
  • Step 2: Apply this formula to find the hypotenuse length.
  • Step 3: Verify that the result matches one of the given choices.

Now, let's work through each step:

Step 1: In a right triangle, the median from the right angle vertex to the hypotenuse equals half of the hypotenuse length. That is, if the length of the median is denoted as m=c2 m = \frac{c}{2} , where c c is the hypotenuse length.

Step 2: The given length of the median is 6. Thus, we have:

6=c2 6 = \frac{c}{2}

Multiplying both sides by 2 gives:

c=2×6=12 c = 2 \times 6 = 12

Step 3: The calculated hypotenuse length is 12. We check the answer options provided and find that 12 is indeed one of the given choices.

Therefore, the solution to the problem is c=12 c = 12 .

Answer

12

Exercise #3

Given the right triangle

Since the measure from the median to the hypotenuse in the triangle is 8.

Find the sum of the lengths of the hypotenuse and hypotenuse in the triangle.

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Video Solution

Answer

24

Exercise #4

The right triangle ABC is shown below.

BD is a median to the hypotenuse.

Calculate the size of the angle DBC ∢\text{DBC} .

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Video Solution

Answer

30

Exercise #5

ABC is a right triangle.

BD is a median to the hypotenuse.

Calculate the size of the angle DAB ∢\text{DAB} .

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Video Solution

Answer

60