Question

A triangle has side lengths 2.83 m, 4 m, and 2.24 m. The angles measures are 45°, 63°, and 72°.

What type of triangle is this triangle?


obtuse isosceles

acute isosceles

obtuse scalene

acute scalene

Answer 1

• D) acute scalene

Explanation:

What are the definitions?

• Obtuse triangle - the triangle with angle greater than 90°;
• Acute triangle - the triangle with all interior angles under 90°;
• Isosceles triangle - the triangle with a pair of equal sides;
• Scalene triangle - the triangle with all three sides (or angles) of different measure.

What we have?

• All sides are different and all angles are under 90°.

Which option is correct?

• D) acute scalene