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Lesson 2-01: Angles
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Lesson 2-01 ways to name an angle Dvertex-use name of vertex if it is not shared ex). <B 2) Number /Letter - Single # or letter inside the angle. ex). <3/2x 3) Capital letters - use a point on each ray and the vertex. The vertex MUST be the middle letters ex). < ABC or <CBA Congruent Angles • angles having the same measure •marked by ares, if there are move ares = more congrient angles. LABC= LEFG B 2 vertex ↑ congruent Side 34 side -An angle is the union of 2 rays having the same endpoint. 7 25° A Angle Measure • number of degrees in the angle. 714 MLABC=25⁰ Straight Angle = 180° • Union of 2 opposite rays ← Acute Angle = less than 90% greater than oº 2 4PQR Adjacent Angles •two angles in the same plane that have a common vertex and common side but don't have any points in commun. 40⁰ M "When a vertex is shared you CANNOT name angle by vertex * Vertical Angles •two non-adjacent (not next to each other) angles formed by a pair of intersecting lines. vertical angles are congruent (the same)! 140⁰ P Right Angle - goº •formed by perpendicular lines CLY L # 1400 Obtuse Angle "greater than ao less than 180° 40⁰ LROS 9 Complementary Angles •2 angles w/ sum of 90⁰ •do not have to be next to / touching each other VA ex). V₂ 40° R 500 Supplementary Angles • 2 angles w sum = 180° 0 DO NOT have to be adjacent ex). 400 = 90⁰ 1400 1800 Linear Pair 0 2 adjacent (next to) angles straight angle = 180° = 90° 60° VL 1200 w/ a sum of a = 180 O If two angles form...
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Alternative transcript:
a linear pair, then they are Supplementary but not all supplementary angles are linear pairs.
reviews the different types of angles in geometry
Jasmine Chen
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reviews the different types of angles in geometry
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Lesson 2-01 ways to name an angle Dvertex-use name of vertex if it is not shared ex). <B 2) Number /Letter - Single # or letter inside the angle. ex). <3/2x 3) Capital letters - use a point on each ray and the vertex. The vertex MUST be the middle letters ex). < ABC or <CBA Congruent Angles • angles having the same measure •marked by ares, if there are move ares = more congrient angles. LABC= LEFG B 2 vertex ↑ congruent Side 34 side -An angle is the union of 2 rays having the same endpoint. 7 25° A Angle Measure • number of degrees in the angle. 714 MLABC=25⁰ Straight Angle = 180° • Union of 2 opposite rays ← Acute Angle = less than 90% greater than oº 2 4PQR Adjacent Angles •two angles in the same plane that have a common vertex and common side but don't have any points in commun. 40⁰ M "When a vertex is shared you CANNOT name angle by vertex * Vertical Angles •two non-adjacent (not next to each other) angles formed by a pair of intersecting lines. vertical angles are congruent (the same)! 140⁰ P Right Angle - goº •formed by perpendicular lines CLY L # 1400 Obtuse Angle "greater than ao less than 180° 40⁰ LROS 9 Complementary Angles •2 angles w/ sum of 90⁰ •do not have to be next to / touching each other VA ex). V₂ 40° R 500 Supplementary Angles • 2 angles w sum = 180° 0 DO NOT have to be adjacent ex). 400 = 90⁰ 1400 1800 Linear Pair 0 2 adjacent (next to) angles straight angle = 180° = 90° 60° VL 1200 w/ a sum of a = 180 O If two angles form...
Lesson 2-01 ways to name an angle Dvertex-use name of vertex if it is not shared ex). <B 2) Number /Letter - Single # or letter inside the angle. ex). <3/2x 3) Capital letters - use a point on each ray and the vertex. The vertex MUST be the middle letters ex). < ABC or <CBA Congruent Angles • angles having the same measure •marked by ares, if there are move ares = more congrient angles. LABC= LEFG B 2 vertex ↑ congruent Side 34 side -An angle is the union of 2 rays having the same endpoint. 7 25° A Angle Measure • number of degrees in the angle. 714 MLABC=25⁰ Straight Angle = 180° • Union of 2 opposite rays ← Acute Angle = less than 90% greater than oº 2 4PQR Adjacent Angles •two angles in the same plane that have a common vertex and common side but don't have any points in commun. 40⁰ M "When a vertex is shared you CANNOT name angle by vertex * Vertical Angles •two non-adjacent (not next to each other) angles formed by a pair of intersecting lines. vertical angles are congruent (the same)! 140⁰ P Right Angle - goº •formed by perpendicular lines CLY L # 1400 Obtuse Angle "greater than ao less than 180° 40⁰ LROS 9 Complementary Angles •2 angles w/ sum of 90⁰ •do not have to be next to / touching each other VA ex). V₂ 40° R 500 Supplementary Angles • 2 angles w sum = 180° 0 DO NOT have to be adjacent ex). 400 = 90⁰ 1400 1800 Linear Pair 0 2 adjacent (next to) angles straight angle = 180° = 90° 60° VL 1200 w/ a sum of a = 180 O If two angles form...
Can't find what you're looking for? Explore other subjects.
Knowunity is the # 1 ranked education app in five European countries
Knowunity was a featured story by Apple and has consistently topped the app store charts within the education category in Germany, Italy, Poland, Switzerland and United Kingdom. Join Knowunity today and help millions of students around the world.
Still not sure? Look at what your fellow peers are saying...
iOS User
I love this app so much [...] I recommend Knowunity to everyone!!! I went from a C to an A with it :D
Stefan S, iOS User
The application is very simple and well designed. So far I have found what I was looking for :D
SuSSan, iOS User
Love this App ❤️, I use it basically all the time whenever I'm studying
Alternative transcript:
a linear pair, then they are Supplementary but not all supplementary angles are linear pairs.