Quiz on triangles

What is the third angle for the triangle where angle1 = 45° and angle2 = 45°? 45° 90° 60°

A triangle can have one right angle two right angles

Which of the following can form a right-angled triangle? 14, 15, 26 12, 16, 20

Which of the following triangles are always similar? Equilateral triangle Isosceles triangle

If one angle of a triangle is obtuse, then which one of the following is the possible measure of remaining angles? 100° 85°

If the largest angle in a triangle is 70°, what is the least possible value of the smallest angle of the triangle? 30° 10°

The perimeter of a scalene triangle with sides a, b, c is a + b + c 2a None of these

A scalene triangle has ___ lines of symmetry two no 15

There is a right triangle PQR where: angle Q = 90°; angle P = angle R. What is the measure of angles P and R? 85° 65° 45°