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Author: Kevin Hall
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2. Which of the following words could describe this triangle:
● Obtuse (at least 1 angle greater than 90o)
● Acute (all angles less than 90o)
You do NOT have to draw the pictures for each question.
1).
2).
81o
59o
100o
40o
40o
50o
Obtuse: has an angle greater than 90o
Acute: all angles less than 90o

3. Which of the following words could describe this triangle:
● Scalene
● Isosceles
● Equilateral
3).
4). 10 12 15
Isosceles: at least 2 congruent sides.
Scalene: all 3 sides different lengths.

4. Which of the following words could describe this triangle:
● Scalene
● Isosceles
● Equilateral
● Right
● Obtuse
● Acute
5).
6). 18 7
121o 14
Right: has a 90o angle.
Scalene: all 3 sides different lengths.
Isosceles: at least 2 congruent sides.
Obtuse: has an angle greater than 90o.

5. Which of the following words could describe this triangle:
● Scalene
● Isosceles
● Equilateral
● Right
● Obtuse
● Acute
7).
8).
60o
110o
35o
35o
60o
60o
Equilateral: all 3 sides congruent.
Isosceles: at least 2 congruent sides.
Isosceles: at least 2 congruent sides.
Obtuse: has an angle greater than 90o.
Acute: all 3 angles less than 90o.