Question

midterm cumulative test
johan draws a triangle that has an angle measuring 91°. what type of triangle could johan
isosceles
acute
equilateral
right

Explanation:

Step1: Recall triangle - type definitions

An acute - angled triangle has all angles less than 90°. A right - angled triangle has one angle equal to 90°. An equilateral triangle has all angles equal to 60°. An isosceles triangle has two equal sides and two equal angles. An angle greater than 90° is an obtuse angle, and a triangle with an obtuse angle is an obtuse - angled triangle. But an isosceles triangle can have an obtuse angle.

Step2: Analyze the given angle

The given angle is 91°, which is an obtuse angle. While an acute, equilateral, or right triangle cannot have an angle of 91°, an isosceles triangle can have an obtuse angle.

Answer:

isosceles