GEOMETRY
Angles in daily life
If we look around us, we will see angles everywhere
Also called an aerial, an antenna is a conductor that can transmit, send and receive signals such as microwave, radio or satellite signals. A high-gain antenna increases signal strength, where a low-gain antenna receives or transmits over a wide angle.
transversal
The parallel lines also have a transversal cutting through it. The picture is part of stair railings.
This is a picture of the Colosseum which is located in Rome, Italy. It was essentially a sports arena back when it was first built. They also have a transversal running through it.
A Line That Intersects two Or MoreLines At Different Points Is
Called A Transversal
31
7
2 4
865
X // y
x
y
31
7
2 4
865
x
y
Interior Angles
31
7
2 4
865
x
y
Exterior Angles
2 4
65x
y
Alternate interior Angles
1 3
78
x
y
Alternate exterior Angles
2 4
65x
y
Interior Angles on the same side of transversal
1 3
78
x
y
Exterior Angles on the same side of
transversal
31
7
2 4
865
x
y
Corresponding Angles
If 2 Parallel Lines Are Cut By A Transversal Then:
Corresponding Angles Are Congruent
Alternate Interior/ exterior angles are congruent
Interior/exterior angle on the same side of transversal are congruent
11 12
13 14
15 1617 18
Name The Angles
1. 11 and 152. 12 and 163. 13 and 164. 12 and 185. 14 and 166. 14 and 187. 11 and 148. 15 and 17
1.Corresponding2.Corresponding3.Alt Interior4.Exterior angles on the same side of t.5.Interior angles on the same side of t6.Corresponding7.Vertical Angles8.Linear Pair
GIVEN: a // b m ∟1 = 105
1 23 4
5 67 8
a
b
Find:1. ∟3 = 2. ∟6 =3. ∟7 =4. ∟4 =5. ∟5 =
