Use a math drawing to explain why LaTeX: \frac{4}{5}=\frac{4\:\times3}{5\:\times3}\:=\frac{12}{15}4 5 = 4 × 3 5 × 3 = 12 15 .
1 answer:
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Answer:
1. 90°
2. 90°
3. 40°
4. 45°
5. 45°
Step-by-step explanation:
<u>Given:</u> ΔABC,
CD⊥AB,
m∠A=50°,
m∠ACB=85°
<u>Solution:</u>
1. ∠ADC is a right ange, because CD⊥AB, so
2. ∠CDB is a right ange, because CD⊥AB, so
3. Consider triangle ACD. The sum of the measures of all interior angles is always 180°, so
4. By Angle Addition Postulate,
5. Consider triangle ABC. The sum of the measures of all interior angles is always 180°, so