Question

— ZA+ZA= 2A + 2B + 2C=180°.
10. In a AABC, if 2 ZA = 3 ZB = 6 ZC, calculate ZA, ZB and ZC.
11. What is the measure of each angle of an equilateral triangle?
Hint. All the angles of an equilateral triangle are equal.
12. In the given figure, DE || BC. If ZA = 65° and ZB = 55°, find
(i) LADE (ii) ZAED
(iii) ZC
Hint. Since DE || BC and ADB is the transversal, so
ZADE = _ABC = 55° (corresponding angles).​

Answer 1

Answer:

In isosceles triangles, the angles at the base equal one another; and if the ... In the triangle ABC, if ZB > ZC, then AC > AB. ... If ZA = ZP, then by (SAS) the two triangles are congruent.