13. Draw a triangle with two angles 70° and 50° and circum radius 4cm
Answers
Step-by-step explanation:
How do I draw a triangle with a circumradius 3 cm and the two angles are 37 1/2 and 35 1/2?
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Question: How do I draw a triangle with a circumradius 3 cm and the two angles are 37 1/2 and 35 1/2?
Start with a circle with the given radius (3 cm).
Each of the vertices of the triangle will be on the circle. Each of the angles of the triangle will be inscribed angles of the circle. Since we are given two of the angle measurements, the third angle measurement can be found. The measure of an inscribed angle is half the measure its intercepted arc. Need to make adjacent nonover-lapping arcs of 214, 71, and 75 degrees (just have to make two).
The reflex angle ∠BAC has a measure of 214∘ .
∠CAD has a measure of 71∘ .
∠BAD has a measure of 360−214−71=75∘ .
The requested triangle is △BCD .