Question

Take a look at the picture and answer the question.

Question:
1. What theorem/postulate did they use to find the measure of the missing angle?
(AAS/ASA/SAS/SSS)

please answer this correctly. thank you​

Answer 1

Answer:

may be reformulated as the AAA (angle-angle-angle) similarity theorem: two triangles have their corresponding angles equal if and only if their corresponding sides are proportional. Two similar triangles are related by a scaling (or similarity) factor s: if the first triangle has sides a, b, and c, then the second…

Answer 2

Given that these triangles are congruent.

so, ∠D = ∠M

3X = 2X+20

X = 20°

So, ∠D = 3×20 = 60°

∠S = 20+10 = 30°

∠M = 2×20 + 20 = 60°

∠R = 3×20 - 30 = 30°

Thats how they found the angles. Hope it helps. Thank you.