Each side length of a triangle is 4 cm. What type of figure is it ?
1 answer:
Answer:
Equilateral and acute
Explanation:
Equilateral triangles refer to triangles where all side lengths are equal. Acute triangles are triangles where all angles are acute (less than ). Since each side length of the triangle is
, the triangle is an equilateral triangle. Due to the property of equilateral triangles where each angle is equivalent to
, we can conclude that this triangle is equilateral and acute.
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Answer:
--- Never true
--- Always true
---- Sometimes true
---- Sometimes true
Step-by-step explanation:
Given
Required
Determine if the following expression is always, sometimes of never true
Expand using cosine rule
So, we have:
Hence: (a) is never true
Expand using cosine rule
So, we have:
Hence: (b) is always true
If
Then:
Divide both sides by 2
(c) is only true for
Hence: (c) is sometimes true
If
Then:
Divide both sides by 2
(d) is only true for
Hence: (d) is sometimes true