Which other angles are congruent to Angle #1?

Angles #3, 5, & 7
What should all three angles of a triangle add up to?
180 degrees
Angles 1 and 3 are what type of angles?
Vertical
Find angle A.

51 degrees
Which angles are congruent to Angle #8?

Angles #2, 4, & 6
Find the measure of angle a.

60 degrees
Angles 1 and 2 are what type of angles?
Supplementary
Find angle B.

129 degrees
What is the measure of angle x?

130 degrees
What is the measure of the missing angle?

100 degrees
These two angles are what type?
Find angle C.

145 degrees
What is the measure of angle y?

130 degrees
What does x equal?

35 degrees
Supplementary angles add up to what number?
180 degrees
Find angle D.

145 degrees
Explain why angles # 1 and 8 are NOT congruent.
Because lines a and b are not parallel.
Explain, using triangles, why a rectangle has an angle sum of 360 degrees.
Because a rectangle can fit two triangles in it.
180 * 2 = 360
Vertical angles are always what?
Congruent
Find angle F.

35 degrees