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Gyaan Maths
CBSE · Class 6-12
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Back to A Tale of Three Intersecting Lines
Class 7 · Ganita Prakash · Unit 7: A Tale of Three Intersecting Lines
Angle Sum Property
Lesson 1 of 3
All three interior angles add to
180
°
180°
180°
. In an equilateral, each is
60
°
60°
60°
.
Next
Exterior Angle
All lessons in this unit
1. Angle Sum Property
2. Exterior Angle
3. Triangle Inequality