Riya draws a triangle in her notebook. Two of its angles measure 50° and 50°. Using the angle-sum property, she names the triangle by its angles. Since all three angles are less than 90°, what type of triangle (by angles) has she drawn?

Question

Accepted Answer

Acute-angled triangle. Third angle = 180 - 50 - 50 = 80°. All angles (50, 50, 80) are below 90°, so it is an acute-angled triangle.

Riya draws a triangle in her notebook. Two of its angles measure 50° and 50°.
Using the angle-sum property, she names the triangle by its angles.
Since all three angles are less than 90°, what type of triangle (by angles) has she drawn?

Step-by-Step Solution

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More Class 9 Geometrical Terms and Definitions practice

Riya draws a triangle in her notebook. Two of its angles measure 50° and 50°.Using the angle-sum property, she names the triangle by its angles.Since all three angles are less than 90°, what type of triangle (by angles) has she drawn?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 9 Geometrical Terms and Definitions practice

Riya draws a triangle in her notebook. Two of its angles measure 50° and 50°.
Using the angle-sum property, she names the triangle by its angles.
Since all three angles are less than 90°, what type of triangle (by angles) has she drawn?