4
Answer: CSet 3: Triangles
Explanation
Alexander is setting up a triangular tent. The two equal support poles are each 5 inches long, and the base is 15 inches. What is the total length of the tent frame?
A.
35
B.
15
C.✓ Correct
25
D.
12
Detailed Explanation
Choice C is correct. An isosceles triangle has two equal sides. 1. Two equal sides: 2 × 5 = 10 inches Base: 15 inches Perimeter: 10 + 15 = 25 inches Therefore, the perimeter is 25 inches.
Key Steps:
•
The correct answer is 25
Why others are wrong:
A: This would give an incorrect result. Choice A is incorrect and may result from a calculation error.
B: This would give an incorrect result. Choice B is incorrect and may result from a calculation error.
D: This would give an incorrect result. Choice D is incorrect and may result from a calculation error.
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