This lesson explores the unique properties of right triangles. It begins with a review of basic triangle properties, emphasizing that all triangles have three sides and angles. The focus then shifts to right triangles, highlighting their defining features: one right angle, two legs, and a hypotenuse. The lesson explains that the right angle measures 90 degrees and can be located anywhere in the triangle. The legs extend from the right angle, while the hypotenuse is the longest side opposite the right angle. The size and orientation of right triangles do not affect their classification. The lesson concludes with guidance on identifying right triangles using these properties.

What is a defining feature of all triangles?

• They have four sides.

• They have two sides.

• They have five sides.

• They have three sides.

Which type of angle is found in every right triangle?

• Acute angle

• Right angle

• Straight angle

• Obtuse angle

How many legs does a right triangle have?

• One

• Two

• Three

• Four

What is the longest side of a right triangle called?

• Hypotenuse

• Diagonal

• Base

• Height

Does the orientation of a right triangle affect its classification?

• Yes, it must be vertical.

• Yes, it must be upright.

• No, orientation does not matter.

• Yes, it must be horizontal.

What must be present in a triangle for it to be classified as a right triangle?

• An obtuse angle

• A right angle

• An acute angle

• A straight angle

Which of the following is NOT a property of right triangles?

• Two legs and one hypotenuse

• One right angle

• Special relationship between side lengths

• Fixed size and orientation

What helps in identifying the legs and hypotenuse in a right triangle?

• The position of the right angle

• The position of the obtuse angle

• The position of the straight angle

• The position of the acute angle

Which side of a right triangle is opposite the right angle?

• Leg 1

• Leg 2

• Base

• Hypotenuse

What is essential for a triangle to be identified as a right triangle?

• It must have equal sides.

• It must have a straight angle.

• It must have a right angle.

• It must have an obtuse angle.