Quiz on Triangles

1. This type of triangle has one 90 degree angle.

2. A ________ triangle is one where all 3 angles measure less than 90 degrees.

3. All 3 interior angles of a triangle add up to

4. An isosceles triangle has

5. The perimeter of scalene triangle with sides a, b, c is

6. Which of the following triangles are always similar?

7. If one angle of a triangle is 50° and second angle is 30°,then what type of triangle it is?

8. Which of the following measures of sides can make a valid triangle?

9. There is a right triangle PQR where: angle Q = 90°; angle P = angle R. What is the measure of angles P and R?

10. If a triangle is obtuse, which of the following set of angles is invalid for the triangle?