Angles of Triangles

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In a triangle, angle A=? B=10 C=160

10

In a triangle, angle A=30 B=49 C=?

101

Find the missing angle

103

In a triangle, angle A=20 B=40 C=?

120

In a triangle, angle A=20 B=20 C=?

140

In a triangle, angle A=10 B=10 C=?

160

In a triangle, angle A=? B=40 C=120

20

In a triangle, angle A=? B=75 C=80

25

Find the missing angle

27

In a triangle, angle A=? B=50 C=100

30

In a triangle, angle A=22 B=? C=120

38

Find the missing angle

39

Find the missing angle

40

Find the missing angle

50

Find the missing angle

51

Find the missing angle

53

Find the missing angle

58

In a triangle, angle A=80 B=? C=41

59

Find the missing angle

60

Find the missing angle

61

Find the missing angle

75

Find the missing angle

76

In a triangle, angle A=24 B=? C=79

77

In a triangle, angle A=? B=60 C=40

80

Find the missing angle

90

In a triangle, angle A=27 B=55 C=?

98

Acute Triangle

All angles are acute

Equiangular Triangle

All angles are congruent

Equilateral Triangle

All sides are congruent

Scalene Triangle

No sides are congruent

Obtuse Triangle

One obtuse angle

Right Triangle

One right angle

Triangle Angle Sum Theorem

The sum of the measures of the angles of a triangle = 180 degrees

If the measures of two angles of a triangle are 45 and 35 degrees, find the measure of the third angle.

The third angle measure is 100 degrees.

If the measures of two angles of a triangle are 90 and 45 degrees, find the measure of the third angle.

The third angle measure is 45 degrees.

If the measures of two angles of a triangle are 22 and 98 degrees, find the measure of the third angle.

The third angle measure is 60 degrees.

If the measures of two angles of a triangle are 50 and 60 degrees, find the measure of the third angle.

The third angle measure is 70 degrees.

Isosceles Triangle

Two sides are congruent


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