Exploring Unknown Angles and Their Relationships

What is the sum of complementary angles?

• 90°

• 360°

• 45°

• 180°

What do supplementary angles add up to?

• 45°

• 90°

• 360°

• 180°

What does 'adjacent' mean in the context of angles?

• Opposite

• Next to

• Equal

• Parallel

How are vertical angles formed?

• By two intersecting lines

• By a straight line

• By two parallel lines

• By a right angle

How do you find an unknown complementary angle?

• Subtract the known angle from 90°

• Subtract the known angle from 180°

• Add the known angle to 90°

• Add the known angle to 180°

What is the sum of the angles formed by intersecting lines?

• 360°

• 180°

• 270°

• 90°

If one of the adjacent angles is double the other, and their sum is 138°, what is the measure of the smaller angle?

• 46°

• 69°

• 92°

• 138°

What is the measure of the larger angle if it is double the smaller angle of 46°?

• 138°

• 92°

• 69°

• 46°

Which types of angles are always equal to each other?

• Complementary angles

• Supplementary angles

• Adjacent angles

• Vertical angles