Angles Classifying and Naming Angles Ms Beaty Angle
Angles Classifying and Naming Angles Ms. Beaty
Angle Two rays that have the same initial point. Symbol:
Vertex The shared point of an angle
Degrees units used to measure angles 45° 1 Measure of angle 1 is 45 degrees. m 1= 45°
Classifications of angles
Acute Angle • measures o between 0 o and 90
Right Angle • measures EXACTLY o 90
Obtuse Angle • measures o between 90 o and 180
Straight Angle measures EXACTLY o 180
Naming Angles
#1 By the vertex C A 1 A T
#2 By a number C A 1 ( NOT the measure ) 1 T
#3 By 3 points (vertex and 1 point on each ray) CAT or TAC C A 1 ***Order can be T reversed BUT the vertex MUST be in the middle!!!
Angles Vertical, Adjacent, Complementary, Supplementary Ms. Beaty
Warm Up
Adjacent Angles “Beside” Angles
Vertical Angles “Opposite” Angles Congruent
Find the missing Angle 110° X
Solve for X
Solve for X
Solve for X
Complementary Angles that add to 90°. (Right Angle) o “Complementing” someone is the “right” thing to do.
Find the Complement 45° M
Find X 30° 3 x
Find X 20° 10 x
Supplementary Angles that add up to 180° (Straight Angle).
Find the Supplement
Find the Supplement
Find X 12 x 60°
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