Look at the isosceles triangle below:
What is its perimeter?
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Look at the isosceles triangle below:
What is its perimeter?
Since we are referring to an isosceles triangle, the two legs are equal to each other.
In the drawing, they give us the base which is equal to 4 and one side is equal to 6, therefore the other side is also equal to 6.
The perimeter of the triangle is equal to the sum of the sides and therefore:
16
In a right triangle, the side opposite the right angle is called....?
An isosceles triangle has exactly two sides of equal length. The third side (called the base) can be different. In this problem, the two equal sides are both 6 units long.
Look for matching labels or tick marks on the diagram. Here, one side is labeled "6" so the unmarked side must also be 6. The base is clearly labeled "4".
Yes! Perimeter means the distance around the outside of any shape. For triangles, simply add all three side lengths together:
That would give you 14, which is incorrect. You're mixing up which sides are equal! Remember: in this triangle, the two slanted sides are equal (both 6), and the base is different (4).
Absolutely! Make sure you have exactly three numbers in your addition: the two equal sides (6 + 6) plus the base (4). Total:
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