'Sum theorem' presentation slideshows

4-2 Angles of Triangles

You classified triangles by their side or angle measures. 4-2 Angles of Triangles. Apply the Triangle Angle-Sum Theorem. Apply the Exterior Angle Theorem. The Three Angles. Number the angles of your triangle. Fold the top angle (1) to touch the opposite side.

300 views • 22 slides

Angles of Triangles

398 views • 16 slides

Concept 1

Concept 1. Concept 2. Use the Triangle Angle-Sum Theorem. SOFTBALL The diagram shows the path of the softball in a drill developed by four players. Find the measure of each numbered angle.

210 views • 15 slides

3.5 The Polygon Angle-Sum Theorems

500 views • 13 slides

Geometry with McCarthy

308 views • 13 slides

Law of Sines

458 views • 11 slides

Explain why ABC is isosceles.

? ABC and ? XAB are alternate interior angles formed by XA , BC , and the transversal AB . Because XA || BC , ? ABC ? XAB. The diagram shows that ? XAB ? ACB . By the Transitive Property of Congruence, ? ABC ? ACB .

194 views • 3 slides