Exercise 5: Practice it yourself

1. \(\overrightarrow{GF}\) has point G as its endpoint.
2. \(\overline{AG}\) has no endpoint.
3. \(\overleftrightarrow{CD}\) has three endpoints.
4. Point D is the vertex of ∠DGB.
5. m(∠AGC) = m(∠BGD)
6. ∠AGF ≅ ∠BGE

Refer to the figure in which m(∠1) = 50^o. Find the measure of each angle or sum of angles.

1. ∠3
2. ∠4
3. m(∠1) + m(∠2) + m(∠3)
4. m(∠2) + m(∠4)

Refer to the figure in which m(∠1) + m(∠3) + m(∠4) = 180^o, ∠3 ≅ ∠4, and ∠4 ≅ ∠5.  Find the measure of each angle

1. m(∠1) =
2. m(∠2) =
3. m(∠3) =
4. m(∠6) =

Refer to the figure below where ∠1 ≅ ∠ACD, ∠1 ≅ ∠2, and ∠BAC ≅ ∠2.

1. What is the complement of ∠BAC?
2. What is the supplement of ∠BAC?

Refer to the figure where ∠EBS ≅ ∠FEB

1. What is the measure of ∠AET?
2. What is the measure of ∠AEF?

1. Find the supplement of the complement of a 51^o angle.
2. Find the complement of the supplement of a 173^o angle.
3. Find the complement of the complement of a 1^o angle.
4. Find the supplement of the supplement of a 6^o angle