Question
Easy
D is a point on side AB of a ∆ABC such that CD is the bisector of ∠ACB. If ∠A=50° and ∠B=70°, then ∠ADC is equal to :
1
30°
2
50°
3
70°
4
100°
Question Details
Time to Solve: 12
Exam: CTET
Level/Paper: CTET_P2
Chapter: 2D Geometry
Topic: Triangles
Correct Answer
Option D
Explanation
To determine why Option 4 (100°) is the correct answer for ∠ADC, let's analyze the given information and apply geometric principles. ### Explanation: 1. Triangle Angle Sum Property: - In any triangle, the sum of the interior angles is always 180°. - For triangle ∆ABC, we have: \[ ∠A + ∠B + ∠C = 180° \] - Given ∠A = 50° and ∠B = 70°, we can find ∠C: \[…Read More
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