The question asks which terms correctly describe a triangle with two 45° angles. Let's break it down:

• Isosceles (A): A triangle with two 45° angles will have two equal angles, meaning it is also an isosceles triangle. This option is correct.

• Right (B): Since two angles are 45°, the third angle must be 90° (because the sum of angles in a triangle is 180°). Therefore, this is a right triangle. This option is correct.

• Equilateral (C): An equilateral triangle has all angles equal to 60°, so this is incorrect.

• Obtuse (D): An obtuse triangle has one angle greater than 90°, which is not the case here. This is incorrect.

• Equiangular (E): An equiangular triangle has all angles equal. Since two angles are 45° and one is 90°, this is incorrect.

• Scalene (F): A scalene triangle has no equal sides or angles. Since this triangle has two equal angles, it is not scalene. This is incorrect.

So, the correct options are:

• A. Isosceles
• B. Right

Would you like further explanation or have any questions?

Here are 5 related questions:

1. What is the sum of the angles in any triangle?
2. Can a triangle be both isosceles and scalene?
3. How can you calculate the third angle of a triangle if you know two angles?
4. What is the definition of an equilateral triangle?
5. What distinguishes a right triangle from an obtuse triangle?

Tip: In a right triangle, the other two angles must sum to 90°.