Again i wrote the question wrong.
4. Classify the triangle with angles measuring 69º, 42º, and 69º.
A. right
B. equilateral
C. isosceles acute
D. isosceles obtuse
You said isosceles but i didn't know whether it was C or D.
Here's one more.
3. Classify the triangle with side lengths 4, 4, and 4.
A. right
B. equilateral
C. scalene
D. isosceles
I think its B.
3. is right.
Here's information about 4.
http://www.mathsisfun.com/triangle.html
Answers for Test: Tools of Geometry Unit Test Part 1 pless
To classify a triangle based on its angles or side lengths, we need to understand the properties of different types of triangles.
For question 4, we are given angles measuring 69º, 42º, and 69º. To determine the classification, we can look at the properties of different types of triangles.
- An equilateral triangle has all three angles equal to 60º. Since the given angles are not all equal, we can eliminate option B.
- A right triangle has one angle measuring 90º. None of the given angles are 90º, so we can eliminate option A.
- An isosceles triangle has two sides of equal length. Since we are not given any side lengths, we cannot determine if it is isosceles based only on the angle measures.
- A triangle can be acute or obtuse depending on the size of its angles. An acute triangle has all three angles less than 90º, and an obtuse triangle has one angle greater than 90º. Looking at the given angles, 69º and 42º are both less than 90º, so the largest angle cannot be greater than 90º. Therefore, it is an acute triangle.
Based on the given information, the correct classification for the triangle with angle measures 69º, 42º, and 69º is C. isosceles acute.
For question 3, we are given side lengths of 4, 4, and 4. To determine the classification, we can again look at the properties of different types of triangles.
- An equilateral triangle has all three sides equal in length. Since all the sides are 4, this matches the definition of an equilateral triangle. So the correct classification is B. equilateral.
By understanding the properties and definitions of different types of triangles, we can analyze the given information and determine the correct classification.
4. C
3. B