Fishtank Learning
7th Grade Math
Unit 6: Geometry
Lesson 1
Objective
Identify and determine values of angles in complementary and supplementary relationships.
Anchor Problems - Problem 1
Use the diagram below to answer the questions.
a. Name an acute angle.
b. Name an obtuse angle.
c. Name a right angle.
d. Name two adjacent angles.
e. Name two nonadjacent angles.
Anchor Problems - Problem 2
Two angle diagrams are shown below. Use the information about each diagram to find the measure of the angle described.
a. Points $$Q$$, $$R$$, and $$T$$ lie on a straight line, as shown below. Find the measure of $$\angle SRT$$.
b. Angle $${ABC}$$ is a right angle. Find the value of $$x$$.
Anchor Problems - Problem 3
In the diagram below, point $$P$$ lies on line $${QT}$$.
a. Write and solve an equation to find the measure of $$x$$.
b. What is the measure of $$\angle RPT$$?
Problem Set
Target Task
In the diagram below, point $$A$$ lies on line $${BD}$$ and $$\angle CAE$$ is a right angle.
a. Describe the relationship between $$\angle DAE$$ and $$\angle EAB$$.
b. Name two angles that are complementary.
c. If the measure of angle $$DAC$$ is 74°, what is the measure of angle $$ DAE$$?