1 / 10

Angles

Angles. Acute angle ( def ) - angle measure less than 90° Right angle ( def ) - angle measure= 90° Obtuse angle ( def ) - angle measure greater than 90° Straight angle ( def ) - angle = 180° Interior of angle Exterior of angle.

kacia
Download Presentation

Angles

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. Angles Acute angle (def)- angle measure less than 90°Right angle (def)- angle measure= 90°Obtuse angle (def)- angle measure greater than 90°Straight angle (def)- angle = 180° Interior of angle Exterior of angle

  2. To Name an Angle- A. Use 3 letters (vertex in the middle)B. Number it. C. IF there is ONLY ONE angle with that vertex, you may use a single letter (the vertex). A D is NOT appropriate for this sketch b/c vertex 1 there are 3 angles with the vertex B. 2 C Congruent angles- angles that have = measures. - measure of an angle

  3. Adjacent Angles (def)-2 coplanar angles that share a common ray. They must have a common vertex.

  4. Complementary <‘s are 2 angles whose measures have a sum of 90. m<1 + m<2 = 90 • Supplementary <‘s are 2 angles whose measures have a sum of 180. m<1 + m<2 = 180

  5. ° COMPLEMENTARY ANGLES may or may not be adjacent. COMPLEMENTARY ANGLES may or may not be or 50° 40°

  6. SUPPLEMENTARY ANGLES may or may not be adjacent.SUPPLEMENTARY ANGLES may or may not be or 145° 35°

  7. Linear Pair (def)-adjacent angles whose non-common sides form a line. (describes) • Linear Pairs are Supplementary. If <1 and <2 form a linear pair, then they are supplementary. m<1 + m<2 = 180

  8. Angle Bisector(def)- is a ray that divides the angle into 2 congruent angles. A D B C

  9. Angle Addition Postulate- sum of the parts = whole The angles must be adjacent. A D B C

  10. Vertical Angles(def)- 2 nonadjacent angles formed by intersecting lines (describes) 1 4 2 3 If 2 angles are vertical, then they are congruent. (value)

More Related