Basics of trigonometry, similarity of triangles (Grade 8)

What is the Pythagorean theorem used for?

• Solving problems involving right triangles
• Finding missing measurements in similar triangles
• Using trigonometry ratios
• Applying mathematics in real-life situations

If two angles of one triangle are congruent to two angles of another triangle, what can be concluded?

• The triangles are similar
• There is not enough information to determine
• The triangles are congruent
• The triangles are neither congruent nor similar

What is the ratio of the lengths of the sides adjacent and hypotenuse in a right triangle?

• Cosine
• Sine
• Pythagorean
• Tangent

What is the ratio of the lengths of the sides opposite and adjacent to an acute angle in a right triangle?

• Tangent
• Pythagorean
• Cosine
• Sine

What is the sum of the angles in a triangle?

• 180 degrees
• 90 degrees
• 360 degrees
• 270 degrees

What is the ratio of the lengths of the sides opposite and hypotenuse in a right triangle?

• Tangent
• Pythagorean
• Sine
• Cosine

Which of the following is NOT a trigonometric ratio?

• Pythagorean
• Cosine
• Sine
• Tangent

What is the Pythagorean theorem?

• a^2 + b^2 = c
• a^2 - b^2 = c^2
• a^2 + b^2 = c^2
• a^2 - b^2 = c

What is the relationship between the hypotenuse and the legs of a right triangle?

• The hypotenuse is always the shortest side
• The hypotenuse is equal to the sum of the lengths of the legs
• The hypotenuse is equal to the difference of the lengths of the legs
• The hypotenuse is always the longest side

If two triangles are similar, what can be said about their corresponding angles?

• They are complementary
• They are congruent
• There is not enough information to determine
• They are supplementary