alleryStart learning →An exterior angle of a triangle is 100° and the two far interior angles are equal. Find each.
A40°
B50°
C80°
D100°
Answer & Solution
Correct answer: B. 50°
The two far interior angles add up to the exterior angle of 100°, so each is 50°.
Keep practising Triangles and congruence of triangles
Browse all Triangles and congruence of triangles questions for Olympiad (Class 7), or explore more Mathematics topics.
Related questions
In which ancient work were the names for classifying triangles defined?The yield road sign has the shape of which triangle?Two triangles each have angles 40° and 60°, and the side opposite 40° is 8 cm in both. WhiTwo triangles each have sides 6 cm and 8 cm and a 30° angle not between them. Are they conOne triangle has sides 5, 7, 9 cm. Another has sides 9, 5, 7 cm. Are they congruent?In triangle ABC, AB = AC and D is the midpoint of BC. Triangles ABD and ACD are congruent Interior angles are in the ratio 1:2:3. What is the exterior angle at the smallest angle?Three points lie on one straight line. How many proper triangles do they determine?