How to Draw an Isosceles Triangle in a Coordinate Plane | 7.G.A.2

The video tutorial guides viewers on how to draw an isosceles triangle, specifically triangle RST, on a coordinate plane. It outlines the conditions: triangle RST is isosceles, side RT is 5 units, and angle R is 90°. The tutorial provides step-by-step instructions to plot the vertices and construct the triangle, ensuring the right angle is formed. The lesson concludes with a review of the plotted points and emphasizes the geometric principles involved.

What are the given conditions for triangle RST?

• It is isosceles, side RT is 3 units, angle R is 90°.

• It is equilateral, side RT is 5 units, angle R is 60°.

• It is isosceles, side RT is 5 units, angle R is 90°.

• It is scalene, side RT is 5 units, angle R is 45°.

How do you ensure angle R is 90° when plotting the triangle?

• By ensuring all sides are equal.

• By placing a square in the corner to represent 90°.

• By making sure the triangle is equilateral.

• By drawing a circle with a radius of 5 units.

What is the length of the second side of the isosceles triangle?

• 10 units

• 5 units

• 3 units

• 7 units

What are the coordinates of point T?

• (-3, -1)

• (0, 0)

• (2, 4)

• (5, 5)

What type of triangle is formed by the points R, S, and T?

• Obtuse triangle

• Scalene triangle

• Equilateral triangle

• Right isosceles triangle