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Classify triangles by their angles

4th grade (Year 5 in England) · 16 questions · Common Core: 4.G.A.2 · England: Y5 Geometry

Name

Date

Score/ 16

1
Question 1
Mateo says: "A triangle can have two obtuse angles." True or false?
- A. true
- B. false
2
Question 2
A triangle has angles of 32°, 58°, 90°. What type of triangle is it?
- A. acute-angled
- B. right-angled
- C. obtuse-angled
3
Question 3
Ines says: "A triangle can have two right angles." True or false?
- A. true
- B. false
4
Question 4
A triangle has angles of 124°, 39°, 17°. What type of triangle is it?
- A. acute-angled
- B. right-angled
- C. obtuse-angled
5
Question 5
Priya says: "A triangle can have two obtuse angles." True or false?
- A. true
- B. false
6
Question 6
A triangle has angles of 58°, 90°, 32°. What type of triangle is it?
- A. acute-angled
- B. right-angled
- C. obtuse-angled
7
Question 7
Nia says: "A triangle can have two right angles." True or false?
- A. true
- B. false
8
Question 8
A triangle has angles of 66°, 24°, 90°. What type of triangle is it?
- A. acute-angled
- B. right-angled
- C. obtuse-angled
9
Question 9
Zara says: "A triangle can have two obtuse angles." True or false?
- A. true
- B. false
10
Question 10
A triangle has angles of 90°, 42°, 48°. What type of triangle is it?
- A. acute-angled
- B. right-angled
- C. obtuse-angled
11
Question 11
Nia says: "A triangle can have two obtuse angles." True or false?
- A. true
- B. false
12
Question 12
A triangle has angles of 42°, 68°, 70°. What type of triangle is it?
- A. acute-angled
- B. right-angled
- C. obtuse-angled
13
Question 13
Yuki says: "A triangle can have two obtuse angles." True or false?
- A. true
- B. false
14
Question 14
A triangle has angles of 64°, 74°, 42°. What type of triangle is it?
- A. acute-angled
- B. right-angled
- C. obtuse-angled
15
Question 15
Grace says: "A triangle can have two obtuse angles." True or false?
- A. true
- B. false
16
Question 16
A triangle has angles of 90°, 37°, 53°. What type of triangle is it?
- A. acute-angled
- B. right-angled
- C. obtuse-angled

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