This is an
isosceles triangle
## isosceles triangle## right-angled triangle## equilateral triangle |

This is an
equilateral triangle
## right-angled triangle## equilateral triangle## isosceles triangle |

This is a
right-angled triangle
## scalene triangle## equilateral triangle## right-angled triangle |

This is an
acute angle
## acute angle## obtuse angle## right angle |

This is a
right angle
## obtuse angle## acute angle## right angle |

This is an
obtuse angle
## right angle## obtuse angle## acute angle |