html5-img
1 / 14

Notes on Triangles

Notes on Triangles. B. Vertices are labeled with capital letters. The side opposite the vertex is labeled with a corresponding lowercase letter. c. A. a. b. C. Facts From Geometry: Triangle angle sum. B. What happens if you place the angles of a triangle side by side …. A. C.

zubin
Download Presentation

Notes on Triangles

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Notes on Triangles

  2. B • Vertices are labeled with capital letters. • The side opposite the vertex is labeled with a corresponding lowercase letter. c A a b C

  3. Facts From Geometry:Triangle angle sum B • What happens if you place the angles of a triangle side by side… A C

  4. What do these words mean? • Acute • Right • Obtuse

  5. What can you tell me about this triangle? • A right triangle has one angle that measures exactly 90⁰.

  6. What can you tell me about this triangle? • An acute triangle has all angles measuring less than 90⁰.

  7. What can you tell me about this triangle? • An obtuse triangle has one angle that measures greater than 90⁰.

  8. What can you tell me about these triangles? • An isosceles triangle has at least two congruent sides.

  9. Which sides are congruent? • A scalene triangle has no congruent sides.

  10. Which sides are congruent? • An equilateral triangle has three congruent sides. • What about the angles? • An equiangular triangle has three congruent angles. • What is the measure of each angle?

  11. Notation Equal numbers Shape and size.

  12. Congruent TrianglesIf triangles can be rotated, translated, or reflected to match vertex to vertex, then the triangles are congruent. If triangles are congruent, then all corresponding parts are also congruent (3 angles and 3 sides).

  13. Shortcuts…beginning tomorrow we will see how we can use shortcuts to prove that two triangles are congruent instead of having to prove all 6 corresponding parts are congruent.

  14. Homework Assignment:Study all notes from today!

More Related