CC.2.3.7.A.1 M07.C-G.2.1.1 M07.C-G.2.1.2 CC.2.3.7.A.2 M07.C-G.1.1.2 M07.C-G.1.1.3

Angles & Triangles 7th Grade

Pennsylvania Core Standards: CC.2.3.7.A.1
Solve real-world and mathematical problems involving angle measure, area, surface area, circumference, and volume.
Pennsylvania Core Standards: M07.C-G.2.1.1
Identify and use properties of supplementary, complementary, and adjacent angles in a multi- step problem to write and solve simple equations for an unknown angle in a figure
Pennsylvania Core Standards: M07.C-G.2.1.2
Identify and use properties of angles formed when two parallel lines are cut by a transversal (e.g., angles may include alternate interior, alternate exterior, vertical, corresponding).
Pennsylvania Core Standards: CC.2.3.7.A.2
Visualize and represent geometric figures and describe the relationships between them.
Pennsylvania Core Standards: M07.C-G.1.1.2
Identify or describe the properties of all types of triangles based on angle and side measures.
Pennsylvania Core Standards: M07.C-G.1.1.3
Use and apply the triangle inequality theorem.

If two angles of one triangle are congruent to
two angles of another triangle, the triangles are similar.

\begin{array}{rcl} \frac{1.4 cm}{2.8 cm} & = & \frac{2.8 cm}{x} \\ 1.4 cm (x) & = & 2.8 cm (2.8 cm) \\ x & = & 5.6 cm \end{array}

Angles & Triangles