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 ABC measures 35 degrees and angle BAC measures 115 degrees.
What is m<ACE?
In this diagram, lines AB and CD are parallel. Angle ABC measures 35 degrees and angle BAC measures 115 degrees.
What is m<DCB?
In this diagram, lines AB and CD are parallel. Angle ABC measures 35 degrees and angle BAC measures 115 degrees.
What is m<ACB?
Here is a diagram of triangle DEF. Find the measures of angles q, r, and s.
Here is a diagram of triangle DEF. Find the sum of angles q, r, and s.
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 AB measures 2 cm, how long is segment A'B'? Explain.
The point D is shown in addition to A and C. How can you find the point D' that corresponds to D? Explain your reasoning.
