3C Unit 4 Triangles (1) Quiz

1. The shape shown below is an equilateral triangle. The length of Side A is ______cm.

2. The shape shown below is a/an _____.

• equilateral triangle
• right-angled triangle
• scalene triangle
• isosceles triangle

3. A scalene triangle has two angles equal in size.

• Right
• Wrong

4. Which of the following must be the properties of triangles? (There can be more than one answer)

• A triangle has 3 sides.
• A triangle has 3 angles.
• A triangle has two sides equal in length.
• One of the angles is a right angle.

5. Besides isosceles triangle, which type of triangle below has two sides equal in length?

• Scalene triangle
• Right-angled triangle
• Isosceles right-angled triangle

6. There is/are _____ right-angled triangle(s) in the figure below

• 1
• 2
• 3
• 4

7. There is/are _____ right-angled triangle(s) on the dotted paper below.

8. Among the 4 triangles below, which one is different from the others?

• 
• 
• 
• 

9. The shape on the below is an isosceles triangle. Side y is the shortest side. The total length of the 3 sides is 30 cm. The length of Side y is ______ cm.

10. The shape on the below is an isosceles triangle. 8 cm is the shortest side. The total length of the 3 sides is 30 cm. The length of Side y is ______ cm.