8th Grade Math Unit 5 Review: Rational Expressions

This video is a review of Unit 5, focusing on Chapter 11. It covers parallel lines cut by a transversal, finding unknown angles, the sum theorem of a triangle, and angle-angle similarity. The video provides examples and exercises to reinforce these concepts, encouraging students to refer back to their notes and previous videos for further practice.

What chapters does Unit 5 cover?

• Chapters 10, 11, and 12

• Chapters 11, 12, and 13

• Chapters 12, 13, and 14

• Chapters 9, 10, and 11

Which angles are congruent when parallel lines are cut by a transversal?

• Corresponding angles

• Alternate interior angles

• All of the above

• Same side interior angles

What is the property of same side interior angles?

• Supplementary

• Complementary

• Congruent

• None of the above

How do you find the measure of an unknown angle in a triangle?

• Using congruence properties

• Both A and B

• None of the above

• Using supplementary properties

How do you find the measure of an angle using its supplementary angle?

• Subtract from 90 degrees

• Subtract from 180 degrees

• Add to 180 degrees

• None of the above

What theorem is used to find the sum of angles in a triangle?

• Triangle sum theorem

• Pythagorean theorem

• Angle bisector theorem

• Circle theorem

How do you calculate the exterior angle of a triangle?

• None of the above

• Product of opposite interior angles

• Difference of opposite interior angles

• Sum of opposite interior angles

What is the principle of angle-angle similarity in triangles?

• If three angles are congruent, the triangles are congruent

• If two angles are congruent, the triangles are similar

• If two sides are proportional, the triangles are similar

• None of the above

How do you set up a proportion to find a missing side in similar triangles?

• Large side over small side

• Small side over large side

• Corresponding sides of both triangles

• None of the above

What is the measure of angle formed by corresponding angles in similar triangles?

• 180 degrees

• Equal to the corresponding angle

• 90 degrees

• 45 degrees