Lesson 16: Parallel Lines and the Angles in a Triangle | Unit 1: Rigid Transformations and Congruence

Multiple Choice

For triangle ABC, find the measure of the missing angle.

• 30 degrees
• 45 degrees
• 60 degrees
• 24 degrees

Multiple Choice

For triangle DEF, if angle E is 122° and angle F is 38°, what is the measure of angle D?

• 25°
• 20°
• 30°
• 15°

Multiple Choice

For triangle JKL, find the measure of the missing angle.

• 75 degrees
• 88 degrees
• 60 degrees
• 90 degrees

Multiple Choice

For triangle GHI, find the measure of the missing angle.

• 35 degrees
• 90 degrees
• 45 degrees
• 60 degrees

Open Ended

Is there a triangle with _two_ right angles? Explain your reasoning.

Multiple Choice

In this diagram, lines AB and CD are parallel. Angle ABC measures 35° and angle BAC measures 115°. What is the measure of angle ACE?

• 120°
• 65°
• 90°
• 45°

Multiple Choice

In this diagram, lines $$AB$$ and $$CD$$ are parallel. Angle $$ABC$$ measures $$35^\circ$$ and angle $$BAC$$ measures $$115^\circ$$ . What is the measure of angle $$DCB$$ ?

• 115 degrees
• 35 degrees
• 90 degrees
• 45 degrees

Multiple Choice

In this diagram, lines $$AB$$ and $$CD$$ are parallel. Angle $$ABC$$ measures $$35^\circ$$ and angle $$BAC$$ measures $$115^\circ$$ . What is the measure of angle $$ACB$$ ?

• 30 degrees
• 25 degrees
• 50 degrees
• 45 degrees

Multiple Choice

What are the measures of angles $$q$$ , $$r$$ , and $$s$$ in triangle $$DEF$$ ?

• q = 70°, r = 60°, s = 50°
• q = 90°, r = 30°, s = 60°
• q = 75°, r = 75°, s = 30°
• q = 80°, r = 55°, s = 45°

Multiple Choice

What is the sum of the measures of angles q, r, and s in triangle DEF?

• 90 degrees
• 360 degrees
• 180 degrees
• 150 degrees