IM 8.1.16 Practice: Parallel Lines and the Angles in a Triangle
For each triangle, find the measure of the missing angle.
Is there a triangle with two right angles? Explain your reasoning.
In this diagram, lines AB and CD are parallel.
Angle measures and angle measures . What is
What is
What is
Here is a diagram of triangle DEF.
Find the measures of angles , , and .
Find the sum of the measures of angles , , and .
What do you notice about these three angles?
The two figures are congruent. Label the points A',B' and C' that correspond to A, B, and C in the figure on the right.
If segment measures 2 cm, how long is segment ? Explain.
The point is shown in addition to and . How can you find the point that corresponds to ? Explain your reasoning.