Download The base angles of an isosceles triangle are congruent

Supplementary
Angles
Linear
Pair
Complementary
Angles
Vertical
Angles
Isosceles Triangle
Theorem
Two angles
whose measures
add up to 180°
1
2
____+____=_____
Two angles that are side-by-side,
share a common vertex, share a
common ray, & create a straight line
1
2
____+____=_____
Two angles
whose measures
add up to 90°
1
2
_____+_____=______
The nonadjacent angles
formed by two intersecting
lines. (They’re across from
each other.)
The base angles of an
isosceles triangle are
congruent
1
2
3
4
____≅____
1
2
____≅____
____≅____
Alternate
Interior
Angles
Alternate
Exterior
Angles
Corresponding
Angles
Consecutive
Interior
Angles
2
1
The angles on opposite
sides of the transversal and
inside the parallels
≫
4
3
5
6
8
7
≫
____≅____
2
1
The angles on opposite
sides of the transversal and
outside the parallels
____≅____
≫
4
3
5
6
8
7
≫
____≅____
2
1
The angles at the same
location but at different
intersections
≫
4
3
5
6
8
7
≫
____≅____
____≅____
____≅____
____≅____
2
1
The angles on the same side
of the transversal and
inside the parallels
____≅____
3
≫
4
5
6
7
8
≫
_____+_____=______
_____+_____=______