Classifying Triangles

If a triangle has angles of 30°, 60°, and 90°, what type of triangle is it?

• Equilateral triangle

• Isosceles triangle

• Right triangle

• Scalene triangle

What is an equilateral triangle?

• A triangle with all three sides equal and all angles equal to 60°.

• A triangle with one angle greater than 90°.

• A triangle with two sides equal and one angle equal to 90°.

• A triangle with all sides of different lengths.

What is a right triangle?

• A triangle that has one angle equal to 90°.

• A triangle with all sides of equal length.

• A triangle that has no angles equal to 90°.

• A triangle that has two angles equal to 45°.

How many angles does a triangle have?

• Two angles.

• Three angles.

• Four angles.

• One angle.

What type of triangle has two equal sides?

• An equilateral triangle.

• An isosceles triangle.

• A scalene triangle.

• A right triangle.

What is a scalene triangle?

• A triangle with all sides equal.

• A triangle with two equal sides.

• A triangle with no equal sides.

• A triangle with one right angle.

What type of triangle has all sides of different lengths?

• Equilateral triangle

• Isosceles triangle

• Scalene triangle

• Right triangle

What is an isosceles triangle?

• A triangle with at least two equal sides.

• A triangle with all sides equal.

• A triangle with one right angle.

• A triangle with no equal sides.

What is an acute triangle?

• A triangle where all three angles are less than 90°.

• A triangle with one angle greater than 90°.

• A triangle with two equal sides.

• A triangle that has one right angle.

What is a triangle?

• A three-sided polygon.

• A four-sided polygon.

• A shape with equal sides.

• A closed figure with more than three sides.