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Triangles Quiz

1. what is third angle of a triangle if 1st angle is 45° and and 2nd angle is 45°

45° 60° 90°

2. If a triangle has 2 sides with equal lengths and 75° angle between them. What is the type of triangle?

Equilateral Isosceles Right Angle traingle

3. This type of triangle has one 90° degree angle

Acute Right Obtuse

4. What do you call a triangle whose sides are all equal?

Equilateral Isosceles Scalene

5. Which of the following statements are true?

A scalene triangle has at least one obtuse angle External angles of a triangle have a sum of 180º An equilateral triangle is also isosceles

4. A triangle can have

one right angle two right angles none

7. If the measure of one angle of a triangle is 95°, then which of the following cannot be the measure of remaining angles?

80° 90° 15°

8. If a triangle has angles 135°, 15°, 30°. Is it an obtuse triangle?

True False

9. In an equilateral triangle, what is the sum of any two of its angles?

120° 180° 60°

10. If a triangle has 2 sides with equal lengths and 60° angle between them. What is the type of triangle?

Equilateral Isosceles Both